Can LSD Cause Psychosis

The short answer is yes. LSD can trigger psychosis, which is a serious mental health condition in which a person loses touch with reality. That does not mean everyone who takes LSD will develop psychosis. Most people do not. But the risk is real, it is well known to health professionals, and it is one of the most serious harms linked with this drug. It is also a risk that cannot be predicted in advance. A person cannot know, before taking LSD, whether they are one of the people who will be badly affected, and a calm experience in the past does not guarantee safety in the future.

Psychosis is a word that many people have heard but few really understand, so it is worth explaining clearly before going further. In psychosis, the brain’s way of understanding the world breaks down. A person may hear voices that are not there, or see things that others cannot see. They may hold strong beliefs that are not true, such as believing that they are being followed, watched, or plotted against, even when there is no evidence for it. Their thoughts may become confused and hard to follow, and their speech may jump from one subject to another in a way that others cannot understand. They may feel frightened, suspicious, or overwhelmed, and they may behave in ways that seem strange or out of character. To the person going through it, the experience feels completely real, which is why it is so frightening and so hard to argue against.

LSD is a powerful hallucinogen. It changes perception, thought and mood for many hours, and it does so by disturbing the brain’s chemical signalling in a profound way. During the experience itself, a person may see vivid images, hear sounds differently, and feel that time and space have changed. For most people, those effects wear off as the drug leaves the body. But for some people, the disturbance does not stop there. The altered thinking continues after the drug should have worn off, or it returns later, without warning, and it grows into a longer episode of psychosis. In a smaller number of cases, the episode lasts for weeks or months, and the person needs professional treatment to recover.

This article explains, in plain words, what psychosis is, how LSD can trigger it, who is most at risk, what an episode can look like, how long it can last, and what families should do if it happens. It is general information, not individual medical advice. It does not name any medicines or doses, and it does not tell anyone how to use LSD. If you are worried that you or someone close to you may be experiencing psychosis, seek urgent help from a doctor, a hospital, or a mental health service. Psychosis is a medical emergency, and early help makes a real difference.

Hallucinations and False Beliefs

Hallucinations and false beliefs are the two most recognisable signs of psychosis, and they are also the two that LSD can bring on most directly. A hallucination is a perception that feels completely real but has no basis in the outside world. The most common kind is hearing voices, but a person may also see people, animals or objects that are not there, or feel things on their skin that have no cause. During an LSD experience, hallucinations are expected, and most people who take the drug know that what they are seeing is caused by the drug. In psychosis, that understanding is lost. The person believes the voices are real people speaking to them, or that the things they see are really present, and they act on that belief.

False beliefs, which health professionals call delusions, are just as important. A delusion is a belief that is firmly held even though the evidence goes against it, and even though other people can see that it is not true. After LSD, a person may become convinced that they are being followed, that their phone is being listened to, that their friends are plotting against them, or that they have a special mission or a special power. These beliefs are not simply being worried or suspicious. They are fixed and unshakeable, and attempts to argue against them often make the person more certain, not less, because they may believe that the person arguing is part of the plot.

What makes these symptoms so dangerous is that they change behaviour. A person who believes they are being followed may run away, hide, or refuse to leave the house. A person who hears voices telling them to do something may obey the voices, even if the instruction is harmful. A person who believes their food is poisoned may stop eating. A person who believes they have special powers may take risks they would never normally take. The beliefs feel real, so the actions that follow them feel reasonable to the person, even when they are clearly dangerous to everyone else.

It is also worth understanding that hallucinations and false beliefs are not always dramatic or obvious at first. They can start quietly, with a person becoming a little more suspicious than usual, or hearing a sound and being unsure whether it was real. They may check the windows more often, or ask the same question again and again, or become convinced that a neighbour is talking about them. These small signs are easy to miss, especially if the person is good at hiding what they are experiencing. Families often look back afterwards and realise that the signs were there for days or weeks before the full episode began. That is why it is worth taking early changes seriously, rather than waiting for the situation to become impossible to ignore.

After the Episode Ends

One of the most frightening things about psychosis after LSD is that the drug experience itself is supposed to end, and yet the symptoms do not always end with it. LSD usually stays active for eight to twelve hours, and most people expect to feel normal again by the next day, even if they are tired. For some people, that return to normal does not happen. The confusion, the suspicion, or the strange beliefs are still there the next morning, and the morning after that, and the week after that. This is sometimes called a prolonged psychosis, and it is the point at which a drug experience becomes a mental health condition that needs treatment.

The days after an episode can be confusing for everyone involved. The person may feel exhausted, frightened and ashamed, and they may not remember everything that happened. They may insist that what they experienced was real, and they may be angry with people who say otherwise. They may feel that their mind has been damaged, and they may be afraid that it will never work properly again. These fears are understandable, and they deserve a calm and patient response, not argument or blame. The person is not being difficult on purpose. Their brain has been through a serious disturbance, and it needs time to settle.

Families often feel lost at this stage. They do not know whether the person will get better on their own, whether they should wait, or whether they should seek help immediately. The honest answer is that help should be sought early, and that waiting is rarely the safest choice. A doctor or a mental health service can assess the person, offer support, and decide what care is needed. That care may include talking support, rest, a safe place to recover, and, where a professional judges it necessary, treatment in a hospital. The exact form of care depends on the individual, and it is a decision for health professionals, not for family members to make alone.

It is also important to say that recovery after psychosis is possible, and that many people do recover, especially when help comes early. The recovery is not always quick. It may take weeks or months, and the person may feel fragile for a while afterwards. They may need to avoid stress, get regular sleep, and stay away from drugs, including LSD and cannabis, which can make the symptoms return. They may need ongoing support from a mental health team, and their family may need support too. But recovery does happen, and knowing that can give everyone involved the patience to keep going through the difficult early weeks.

Losing Touch With Reality

Losing touch with reality sounds like a dramatic phrase, but in practice it is often a slow and confusing process, and that is part of what makes it so hard to deal with. Reality is not a single thing that a person either has or loses. It is built up from many small judgements, made every minute of the day: what is that sound, who is that person, what did they mean by that, is this safe, what should I do next. In psychosis, those small judgements start to go wrong, one by one, until the person’s picture of the world no longer matches the world everyone else is living in.

LSD can start this process by changing perception itself. During the drug experience, colours, sounds and shapes are distorted, and the person’s sense of time and space changes. That is unsettling enough on its own. But the deeper problem is that LSD also changes how the brain links ideas together. Thoughts that would normally be separate start to feel connected, and ordinary coincidences start to feel meaningful. A song on the radio may feel as if it was chosen specially for the person. A stranger’s glance may feel like a message. A random event may feel like part of a plan. For most people, these feelings fade as the drug wears off. For some, they do not fade, and they harden into fixed beliefs that shape everything the person does.

The practical effects of losing touch with reality are wide and serious. A person may stop going to work or class, because they believe the workplace is unsafe. They may stop eating or sleeping properly, because they believe their food or their bed is a threat. They may cut off contact with friends and family, because they believe those people are part of the problem. They may spend money in strange ways, or give away their belongings, or travel to a place they believe is safe, without telling anyone. Each of these actions makes sense inside the person’s own picture of the world, and that is why it is so hard to talk them out of it. Arguing about the facts rarely works, because the problem is not a lack of facts. It is that the brain’s way of weighing facts has been disturbed.

This is also why psychosis is so frightening for the person going through it. They are not pretending, and they are not trying to be difficult. They are living in a world that feels real and dangerous to them, and they are trying to protect themselves in the only way that makes sense to them. Understanding that can help families respond with patience rather than anger, even when the behaviour is confusing or hurtful. The person needs safety, calm and professional help, not confrontation, and the sooner that help arrives, the better the chances of a full recovery.

Paranoia Moves In

Paranoia is one of the most common and most painful parts of psychosis after LSD. It is a deep and persistent feeling of being threatened, watched, followed or plotted against, even when there is no real evidence for it. Everyone feels suspicious sometimes, and a moment of worry about a stranger or a strange noise is normal. Paranoia in psychosis is different. It is constant, it grows stronger rather than fading, and it changes how the person lives their life.

The way paranoia develops after LSD is often gradual. At first, the person may simply feel uneasy in public, or they may feel that people are looking at them more than usual. They may start to avoid crowded places, or they may check locks and windows more often. Then the feeling grows. They may become convinced that a particular person, such as a neighbour, a colleague or a family member, is working against them. They may believe their phone or computer is being monitored. They may hear a car outside and be sure it is there to watch them. Each new worry adds to the last, and soon the person is living in a world that feels full of threats.

Paranoia is especially damaging to relationships, because it turns the people closest to the person into suspects. A partner’s ordinary question can be heard as an accusation. A parent’s concern can be seen as spying. A friend’s silence can be read as betrayal. The person may accuse people they love of terrible things, and those accusations hurt, even when the family understands that the drug and the illness are behind them. Trust, which takes years to build, can be broken in days, and rebuilding it takes time and patience on both sides.

It is important for families to understand that paranoia is not a choice, and it is not a sign that the person has become a bad or unkind person. It is a symptom of a brain that is misreading the world, and the fear behind it is real, even if the threat is not. The most helpful response is usually a calm one: do not argue about the details, do not try to prove the person wrong with logic, and do not take the accusations personally if you can avoid it. Instead, focus on safety, on staying close without crowding, and on getting professional help as soon as possible. A mental health professional knows how to talk to a person who is paranoid, and they know how to assess the risk and decide what care is needed.

Can It Trigger Psychosis?

The evidence that LSD can trigger psychosis comes from many sources: hospital records, long-term studies of drug users, and the everyday experience of mental health services. Health professionals have known about this link for decades, and it is one of the reasons LSD is treated as a dangerous drug rather than a harmless experiment. The link is not simple, and it is worth explaining carefully, because a careful explanation is more useful than a frightening one.

First, LSD can trigger a short episode of psychosis that lasts for hours or days, and that is closely tied to the drug experience itself. This is sometimes called a drug-induced psychosis. The person may have hallucinations and false beliefs while the drug is active, and those symptoms may continue for a day or two after the drug should have worn off. In many cases, the symptoms settle with rest, safety and time, especially if the person does not take the drug again. But even a short episode can be dangerous, because the person may act on their beliefs while they are confused and frightened.

Second, LSD can trigger a longer episode that lasts for weeks or months. This is more likely in people who have a personal or family history of mental health problems, but it can also happen to people with no such history. In these longer episodes, the psychosis becomes a condition in its own right, and it needs treatment from a mental health service. The person may need to stay in hospital for a while, and they may need ongoing support after they leave. Some people recover fully. Others are left with a lasting vulnerability, which means they are more likely to become unwell again in the future, especially if they use drugs again or go through a period of severe stress.

Third, LSD can bring forward a mental health condition that might otherwise have appeared later, or might never have appeared at all. This is sometimes called triggering an underlying vulnerability. A person may have a tendency towards psychosis that has never shown itself, because their life has been stable and calm. LSD, with its powerful effect on the brain, can disturb that stability and allow the condition to appear. Once it has appeared, it may not simply disappear when the drug wears off. It may need long-term care, and the person may need to learn how to live with a condition they did not expect to have.

None of this means that every person who takes LSD will develop psychosis, and it would be wrong to suggest otherwise. But it does mean that the risk is real, that it is not limited to people with a known history of mental illness, and that it cannot be predicted or controlled by taking a smaller amount, by being in a calm place, or by having friends nearby. Those things may reduce some risks, but they do not remove the risk of psychosis. The only way to remove it completely is not to take LSD at all.

Who Is Most at Risk

Some people are more likely than others to develop psychosis after LSD, and knowing who is most at risk can help people make informed decisions and can help families watch for early signs. It is important to say at the start that no one is completely safe, and that psychosis has happened to people with no known risk factors. But the risk is higher for certain groups, and the difference is large enough to matter.

The highest risk is for people who already have a mental health condition that involves psychosis, or who have had an episode of psychosis before. For these people, LSD can bring the symptoms back, often quickly and severely. Health professionals are very clear on this point: a person with a history of psychosis should not use LSD, because the chance of a serious relapse is high. The same applies to people who have a close family member, such as a parent, brother or sister, with a condition that involves psychosis. A family history does not guarantee that the person will become unwell, but it does mean their brain may be more vulnerable to the kind of disturbance that LSD causes.

Age is another factor. Young people, especially teenagers and people in their early twenties, are at higher risk, because the brain is still developing during those years, and because this is also the age at which many mental health conditions first appear. A young person who uses LSD may be disturbing a brain that is already going through a sensitive period of change. That does not mean older people are safe, but it does mean that the risk is greatest at the age when LSD use is also most common, which is a worrying combination.

Frequency and amount also matter. A person who uses LSD often, or who uses it over a long period, is more likely to develop lasting problems than a person who uses it once. This is partly because each use is another chance for something to go wrong, and partly because repeated use keeps disturbing the brain before it has had time to recover fully. Mixing LSD with other drugs, including cannabis and alcohol, can also increase the risk, because the brain is being disturbed in several ways at once. Poor sleep, high stress, and a difficult or frightening setting can add to the risk as well, because the brain is already under strain when the drug takes effect.

When an Episode Begins

An episode of psychosis does not usually start in a single moment. It usually builds up over hours or days, and the early signs are often subtle enough to be missed. Knowing what those signs look like can help a person, or their family, to get help earlier, and earlier help usually means a better outcome.

The early signs often involve changes in sleep and mood. The person may sleep much less than usual, or they may stay awake for long periods without feeling tired. They may become unusually excited, talkative or restless, or they may become withdrawn, quiet and hard to reach. Their mood may swing quickly, from laughter to tears to anger, without a clear reason. They may lose interest in food, in washing, or in the ordinary routines of the day. Any one of these changes could have another cause, but when several of them appear together, and when they follow LSD use, they deserve attention.

Thinking changes are often the next sign. The person’s speech may become harder to follow, jumping from one subject to another, or coming back to the same idea again and again. They may become fixated on a particular subject, such as a conspiracy, a religious idea, or a belief that they have a special purpose. They may ask strange questions, or they may say things that do not make sense to the people around them. They may also become more suspicious, asking who is listening, or why a particular person was looking at them. These changes in thinking are not the same as being creative or thoughtful. They are a sign that the brain’s normal way of sorting ideas has been disturbed.

Behaviour changes usually follow. The person may start to act in ways that are out of character: pacing, talking to themselves, laughing for no clear reason, or becoming suddenly angry. They may refuse to eat, or refuse to leave the house, or insist on going out at a strange hour. They may try to hide, or they may try to confront someone they believe is threatening them. At this stage, the person is often frightened, even if they do not say so, and they may not understand why the people around them are worried. The most important thing for family members is to stay calm, to avoid confrontation, and to get professional help quickly, because the situation can change fast, and the person may become a danger to themselves or to others without meaning to.

Psychosis Needs Urgent Help

Psychosis is a medical emergency, and that phrase should be taken seriously. It does not mean that every person with psychosis will come to immediate physical harm, but it does mean that the situation can change quickly, that the person is not able to judge risk properly, and that professional help should not be delayed. Waiting to see if it gets better on its own is a gamble, and it is a gamble that can end badly.

There are several reasons why urgent help matters. The first is safety. A person in psychosis may act on a false belief in a way that puts them in danger. They may walk into traffic because they believe they are being chased, or they may climb to a dangerous place because they believe they can fly, or they may harm themselves because a voice has told them to. They may also become frightened and aggressive towards people they believe are threatening them, even though those people are trying to help. A health professional can assess the risk, provide a safe place, and decide what care is needed to keep the person and the people around them safe.

The second reason is that early treatment works better. Psychosis that is treated early is more likely to settle quickly, and the person is more likely to recover fully. Psychosis that is left untreated for weeks or months is harder to treat, and it is more likely to leave lasting effects on thinking, mood and memory. This is true for psychosis in general, and it is true for psychosis after LSD as well. The brain, like any other part of the body, recovers better when the problem is caught early.

The third reason is that the person and their family need support, not only treatment. Psychosis is frightening for everyone involved, and families often feel helpless, guilty and exhausted. A mental health service can explain what is happening, offer guidance on how to respond, and provide ongoing support as the person recovers. That support matters, because recovery is not only about the symptoms going away. It is about rebuilding trust, rebuilding routines, and rebuilding confidence, and those things take time and help.

If you are with someone who may be experiencing psychosis, there are a few practical things that can help while you wait for professional support. Stay calm, speak slowly and simply, and avoid arguing about the beliefs, because argument usually makes the fear stronger. Keep the environment quiet and safe, reduce noise and bright lights where you can, and stay with the person if it is safe to do so. Do not leave them alone if they are distressed or confused, and do not give them any more drugs or alcohol. Contact a doctor, a hospital, or a mental health crisis service as soon as you can, and explain clearly what has happened, including any LSD use. If the person is in immediate danger, or if you feel unsafe, call emergency services. You are not overreacting. You are doing the right thing.

My Take:

I will be honest with you. Psychosis frightens me, and I think it should frighten anyone who understands what it really is. It is not a strange trip, or a funny story to tell afterwards, or a sign that someone is interesting or deep. It is a condition in which a person’s mind stops being a safe place to live. The world becomes full of threats that are not there, voices that are not real, and beliefs that cannot be argued away. The person is not pretending, and they are not being difficult. They are trapped in a version of reality that feels completely true to them, and they cannot find their way out on their own. That is a terrifying place to be, and it deserves to be taken seriously.

What worries me most is that LSD can trigger this condition in people who had no idea they were at risk. A person may have no history of mental illness, no family history that they know about, and no warning signs at all, and still find themselves in a psychotic episode after taking LSD. That unpredictability is what makes the drug so dangerous in my view. With many risks in life, you can weigh the odds, take precautions, and make a reasonable decision. With LSD and psychosis, the odds are hidden, the precautions do not work reliably, and the decision is made in the dark. I do not think that is a fair gamble, and I do not think it is one that should be taken lightly, especially by young people whose brains are still developing.

I think the word psychosis is used too casually sometimes, and that hides how serious it is. People say someone is psychotic when they mean they are acting strangely, or they use the word as an insult, and that makes it sound like a personality trait rather than an illness. It is an illness, and it is one of the most serious illnesses a brain can suffer. It can last for weeks or months, it can require hospital care, it can damage relationships, work and study, and it can leave a person vulnerable for years afterwards. When I hear that LSD can cause psychosis, I do not hear a small warning. I hear a warning about a condition that can change the course of a life, and I think it should be spoken about in those terms, plainly and without softening it.

The part I find hardest to think about is the fear. A person in psychosis is often deeply frightened, and that fear is real even when the threat is not. Imagine believing that everyone around you is plotting against you, that your food is poisoned, that voices are telling you terrible things, and that no one believes you when you try to explain. That is not an adventure. It is a nightmare that you cannot wake up from, and it can go on for days or weeks. I think about that fear when I hear people talk about LSD as if it were only about colours and music, because the colours and music are only one part of the story, and they are not the part that ruins lives.

I also think about families, because they are the ones who have to live through an episode alongside the person who is unwell. A parent who watches their child become suspicious, confused and frightened, and who does not know what to do, is going through something terrible. A partner who is accused of terrible things by someone they love is going through something terrible. These people did not choose the drug, and they did not choose the illness, but they carry the cost of both, day after day, often without support or understanding from anyone else. I would say to any family in that position that their worry is justified, that they are not overreacting, and that seeking help early is the kindest and most sensible thing they can do, for the person and for themselves.

What I would want people to understand is that early help really does make a difference. Psychosis is not a life sentence, and many people recover, especially when they get help quickly. But recovery takes time, and it takes support, and it is much harder when the episode has been going on for weeks without treatment. If you notice the early signs, the changes in sleep, the strange speech, the growing suspicion, the withdrawal, do not wait to see if it passes. Talk to a doctor, contact a mental health service, and say clearly what has happened. You are not betraying the person by getting help. You are protecting them, and you may be preventing a short episode from becoming a long and damaging one.

I am often asked whether a single use of LSD can cause psychosis, and I think the honest answer is yes, it can, although it is not common. Most people who take LSD once do not develop psychosis. But a small number do, and there is no reliable way to know who they will be. That is the point that matters most to me. If the risk were limited to people with a known history of mental illness, the advice would be simple: those people should avoid LSD, and everyone else could decide for themselves. But the risk is not limited in that way, and so the advice cannot be limited in that way either. Anyone who takes LSD is taking a risk with their mind, and the risk, although small for any one person, is serious enough to be worth thinking about very carefully.

I think young people deserve a particularly honest conversation about this, because they are the ones most likely to be offered LSD, and the ones most at risk if they take it. The brain in the late teens and early twenties is still changing, and it is more sensitive to drugs that disturb its chemistry. A young person who is already under stress, who is sleeping badly, or who is going through a difficult time, is even more vulnerable. I would not lecture a young person about this. I would simply say that their mind is still growing, that it deserves protection, and that a few hours of an intense experience is not worth the chance of months of fear and confusion. That is not a moral judgement. It is a practical one, based on what health professionals have seen again and again.

Recovery is the part of the story that gives me hope, and I want to end on that note, because an article about psychosis should not leave people feeling hopeless. People do recover from psychosis after LSD, especially when they get help early, when they stop using drugs, when they sleep properly, and when they have support from family and from a mental health team. The recovery is not always quick, and it is not always smooth, and some people are left with a vulnerability that they have to live with. But many people get their lives back, their thinking clears, their relationships heal, and they go on to live ordinary, happy lives. That is worth knowing, because it means that even when the worst has happened, it is not the end of the story, and help is still worth seeking.

Finally, I would say this to anyone who is thinking about trying LSD, or who has tried it and is thinking about taking it again: the question is not whether you will have a good experience or a bad experience. The question is whether you are willing to risk a condition that can take away your ability to tell what is real. That is a high price for a few hours, and it is a price that is paid not only by you, but by the people who love you and who will have to watch you go through it. If you have already used LSD and you are worried about your own mind, or if you have noticed changes in yourself that frighten you, please talk to a doctor or a mental health professional. You are not weak for asking, and you are not alone. The mind can be hurt, and the mind can heal, but it heals best when help comes early, and when the person is honest about what has happened.

I also want to say something about the shame that often surrounds psychosis, because shame keeps people from getting help, and that delay can do real harm. A person who has had a psychotic episode may feel embarrassed about what they said or did while they were unwell, and they may worry that people will judge them for ever afterwards. Families may feel the same embarrassment, and they may try to hide what happened. I understand that feeling, but I think it is misplaced. Psychosis is an illness, not a character flaw, and it is not something a person chooses. The people who matter will understand that, especially if they are told honestly what happened and what is being done about it. Hiding the episode only makes recovery lonelier, and loneliness makes recovery harder.

There is a practical point that I think is worth making clearly. If a person has had psychosis after LSD, taking LSD again is a serious risk, even if they feel completely well again. The brain that has been through psychosis once is more likely to go through it again, and the next episode can be worse than the first. The same is true of other drugs that disturb thinking and mood, and of long periods without sleep or under severe stress. This is not a rule made up to spoil anyone’s fun. It is what health professionals have seen in practice, over many years, and it is advice that is given because it protects people. A person who has recovered has something precious, and protecting it is worth more than any single night out.

I think about the long view as well, because psychosis does not only affect the weeks of the episode. It can affect a person’s confidence for years afterwards. They may worry that it will come back, they may feel anxious in situations that remind them of the episode, and they may doubt their own judgement in a way they never did before. Those worries are understandable, and they usually fade with time, especially when the person has good support and a stable routine. But they do not fade on their own in a week. They fade through months of ordinary, steady life: sleeping well, eating well, working or studying at a pace that is manageable, and being around people who are calm and kind. That steady life is not boring. It is the treatment, in the most ordinary and most important sense of the word.

If you are a family member, I would ask you to keep going, even when progress feels slow. Recovery from psychosis is rarely a straight line. There are good days and bad days, and a bad day does not mean the treatment has failed. It means the brain is still healing, and healing takes time. The most helpful thing a family can do is often the simplest: keep the home calm, keep routines regular, keep showing up, and keep believing that the person will get better. That belief matters more than you might think, because a person who is frightened and confused needs to borrow confidence from the people around them until they have enough of their own again.

What I hope most of all is that this article reaches someone before the worst happens, rather than after it. If you are reading this because you are curious about LSD, I hope you will think about psychosis not as a rare and distant risk, but as a real possibility that has happened to real people, many of whom thought it could not happen to them. If you are reading this because someone you love is already unwell, I hope you will take the step of contacting a health professional today, rather than waiting for tomorrow. The mind is precious, and it deserves to be protected, and when it is hurt, it deserves help quickly, kindly, and without judgement.

Frequently Asked Questions

Who is at risk of LSD psychosis?

Anyone who takes LSD carries some risk of psychosis, but the risk is higher for people who have had psychosis before, people with a close family member who has had a condition involving psychosis, and young people whose brains are still developing. People who use LSD often, who mix it with other drugs, or who are under severe stress or sleeping badly are also at higher risk. However, psychosis has happened to people with no known risk factors at all, so no one can be sure they are safe. The risk cannot be removed by taking a smaller amount or by being in a calm place.

What is psychosis after LSD?

Psychosis after LSD is a condition in which a person loses touch with reality following use of the drug. It can include hearing voices, seeing things that are not there, holding false beliefs, such as believing they are being followed or plotted against, and having confused or disorganised thinking. During the drug experience itself, strange perceptions are expected, but in psychosis the person believes those perceptions are real and acts on them. The symptoms may last for hours, days, weeks or longer, and they need assessment and care from a health professional.

How long does LSD psychosis last?

The length of psychosis after LSD varies a great deal from person to person. Some episodes settle within a day or two, once the drug has worn off and the person has had rest and safety. Others last for weeks or months and need treatment from a mental health service. A small number of people are left with a lasting vulnerability, which means they are more likely to become unwell again in the future. Early help, stopping all drug use, regular sleep, and support from a mental health team all improve the chances of a quicker and fuller recovery.

What should families do during LSD psychosis?

Families should stay calm, speak slowly and simply, and avoid arguing about the person’s beliefs, because argument usually makes the fear stronger. They should keep the environment quiet and safe, stay with the person if it is safe to do so, and avoid giving them any more drugs or alcohol. They should contact a doctor, a hospital, or a mental health crisis service as soon as possible and explain clearly what has happened, including any LSD use. If the person is in immediate danger, or if family members feel unsafe, they should call emergency services. Getting help early is the most important step.

Can LSD cause psychosis?

Yes, LSD can cause psychosis. Health professionals have known about this link for decades, and it is one of the most serious harms linked with the drug. LSD can trigger a short episode that lasts for hours or days, a longer episode that lasts for weeks or months, or it can bring forward a mental health condition in a person who had an underlying vulnerability. Most people who take LSD do not develop psychosis, but the risk is real, it cannot be predicted in advance, and it is not limited to people with a known history of mental illness.

Can LSD psychosis be treated?

Yes, psychosis after LSD can be treated, and many people recover, especially when help comes early. Treatment is provided by health professionals, usually through a mental health service, and it may include a safe place to recover, talking support, and care in hospital if that is needed. The person will usually be advised to stop using LSD and other drugs, to get regular sleep, and to avoid stress while they recover. Recovery can take weeks or months, and some people need ongoing support afterwards. The exact care depends on the individual and is decided by the professionals treating them.

Sources

This article is general information only. It is not individual medical advice. If you are worried about your health, talk to a qualified health professional.