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It is surprisingly common to see or hear things that other people don’t, or to hold beliefs that other people might find unusual. Up to 1 in 10 people say that they have heard voices, or seen things that aren’t there at least once in their lifetime [1, 2]. If you keep having experiences like this in a way which causes you distress and prevents you from living your life as you want, you may be experiencing psychosis.

The good news is that there are several helpful treatments available. The most effective psychological therapy for psychosis is called Cognitive Behavioral Therapy (CBT). CBT is a talking treatment for psychosis, which can reduce distress and can help people to recover [3].

What is psychosis?

Psychosis can make you experience reality in a different way to those around you. Most people who have psychosis describe holding unusual beliefs that others do not share, and seeing or hearing things that others may not. Psychosis can cause a wide spectrum of experiences which include:

Psychosis Symptoms

Do any of these symptoms feel familiar to you? Everyone experiences psychosis differently: some people only have a couple of symptoms, whereas others have all of them. To be diagnosed with psychosis, you have to be experiencing at least one of the symptoms in the top section of the diagram (also known as ‘core’ or ‘positive’ symptoms), and these symptoms must be making your daily life more difficult.  

What is it like to have psychosis?

Lucy struggled with psychosis, and her story shows what it can feel like:

Lucy’s experience of hearing voices

I’ve been hearing voices for almost twenty years. They first started when I was 13, at high school, which was a really traumatic time for me. I had changed schools the year before the voices started because my parents divorced, and I had to move to a different city with my Mom. Starting a new school was really difficult because I didn’t know anyone, and a group of girls bullied me. They kept calling me names and sometimes beat me up. I first noticed the voices when I was in class. At first, they commented on what I was doing, but soon they got worse and were criticizing me every day, saying the same things that the bullies were saying to me.  I have heard these voices ever since.

The voices tell me that I am worthless and will never make anything of my life, which I suppose I believe too. They keep criticizing me when I am at work and say that no one likes me, which makes it really hard to focus and do my job. They make me feel low, and rubbish about myself. Some days I just want to stay in bed and not have to face the world, so I call in sick at work. I try not to listen to the voices by ignoring them or playing loud music, but it’s really hard, especially at work.

Understanding Psychosis CBT Psychoeducation Guide

Do I experience psychosis?

Psychosis should only be diagnosed by a mental health professional or doctor. However, answering the screening questions below can give you an idea of whether you might find it helpful to have a professional assessment.

Do you hear voices or sounds that people around you cannot hear?
 Never  Occasionally  Sometimes  Often
Do you see, feel, or smell or taste things that others can’t?
 Never  Occasionally  Sometimes  Often
Do you have unusual thoughts or beliefs that others around you don’t share?
 Never  Occasionally  Sometimes  Often
Do you have difficulty thinking and concentrating in a way which makes your speech sound muddled?
 Never  Occasionally  Sometimes  Often
Do you act in ways that other people think are strange or unpredictable?
 Never  Occasionally  Sometimes  Often
Do you feel disconnected, or struggle to experience emotions as strongly as you used to?
 Never  Occasionally  Sometimes  Often
Do any of the above experiences interfere with your usual daily routine?
 Never  Occasionally  Sometimes  Often


If you answered ‘sometimes’ or ‘often’ to several of the questions, you could be experiencing the symptoms of psychosis. You might find it helpful to speak to a mental health professional about how you are feeling.

Understanding Psychoeducation Guides

What makes you vulnerable to psychosis?

There is no single cause for psychosis. Some things that make you more likely to experience psychosis include:

  • Trauma: People who experience psychosis have often had experiences of trauma in their lives, particularly during childhood [4].
  • Stressful life experiences: Symptoms of psychosis often start during periods of stress [5].
  • Relationships: Difficulties in your relationships can contribute to the development of psychosis [5].
  • Drugs: Drugs, particularly cannabis, have been linked to experiences of psychosis. You may experience psychosis during and after taking drugs [6].
  • Living in urban environments: Some research has shown that living in an inner-city area can lead to some people developing psychosis [7].
  • Genes: Some evidence suggests that there may be genes which make you likely to develop psychosis, but there is a lot of debate about this, as it is hard to separate the impact of your genes from your environment.

What triggers an experience of psychosis?

When symptoms of psychosis develop, there is usually an event that started the experience, called a trigger. Trigger events can be split into two groups:

  • Internal triggers occur within your mind or body.
  • External triggers are situations or experiences outside of yourself, which you perceive as threatening or dangerous.

Internal triggers

Psychosis Internal Triggers

External triggers

Psychosis External Triggers

You might think these experiences all sound quite normal. You would be right – lots of us have experiences like these without being bothered by them.

Psychologists think that what makes psychosis different is the meaning you make of your experiences. You can learn more about this idea below.

What keeps psychosis going?

Research studies have shown that Cognitive Behavioral Therapy (CBT) is a helpful psychological therapy for psychosis. CBT therapists work a bit like firefighters: while the fire is burning they’re not so interested in what caused it, but are more focused on what is keeping it going, and what they can do to put it out. This is because if they can work out what keeps a problem going, they can treat the problem by ‘removing the fuel’ and interrupting this maintaining cycle. In 2001, clinical psychologist Anthony Morrison published a model of psychosis which describes some of the ‘parts’ that keep psychosis going [8,9].  These are:

Psychosis Maintenance Diagram

Treatments for psychosis

Psychological treatments for psychosis

Clinical guidelines recommend two key psychological therapies for psychosis:

  • Cognitive Behavioral Therapy for psychosis, sometimes called CBTp.
  • Family interventions for psychosis.

CBT is a popular form of talking therapy. CBT therapists understand that what we think and do affects the way we feel. Unlike some other therapies, it is often quite structured, and sixteen to twenty-four sessions are usually recommended. After talking things through so that they can understand your problem, you can expect your therapist to set goals with you so that you both know what you are working towards. You should seek out a therapist who has specialist training and experience in treating psychosis. At the start of most sessions you will set an agenda together so that you have agreed what that session will concentrate on.

Family interventions are a form of talking therapy in which families play an important role.  Their involvement and support have been shown to improve recovery outcomes for people experiencing psychosis, and people with psychosis usually receive up to sixteen sessions. Family intervention encourages everyone to work to improve their understanding of psychosis and how to cope with it. It can also include solving key problems, and processing what has happened.

Medical treatments for psychosis

Medical treatments for psychosis are recommended as a first-line treatment alongside psychological therapy. The American Psychiatric Association (APA) and the UK National Institute for Health and Care Excellence (NICE) guidelines recommend that antipsychotic medication should be offered to people who experience psychosis. The type of medication should be carefully decided upon with the professionals who help you and the people who care for you. The mental health professional prescribing the medication should give you plenty of opportunities to discuss its benefits and side effects with you before deciding.

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  2. Beavan, V., Read, J., & Cartwright, C. (2011). The prevalence of voice-hearers in the general population: a literature review. Journal of Mental Health, 20(3), 281-292.
  3. National Collaborating Centre for Mental Health (2014). Psychosis and schizophrenia in adults: treatment and management.
  4. Varese, F., Smeets, F., Drukker, M., Lieverse, R., Lataster, T., Viechtbauer, W., … & Bentall, R. P. (2012). Childhood adversities increase the risk of psychosis: a meta-analysis of patient-control, prospective-and cross-sectional cohort studies. Schizophrenia bulletin, 38(4), 661-671..
  5. Myin-Germeys, I., Krabbendam, L., Delespaul, P. A. E. G., & Van Os, J. (2003). Do life events have their effect on psychosis by influencing the emotional reactivity to daily life stress? Psychological Medicine, 33(2), 327-333.
  6. Di Forti, M., Quattrone, D., Freeman, T. P., Tripoli, G., Gayer-Anderson, C., Quigley, H., … & van der Ven, E. (2019). The contribution of cannabis use to variation in the incidence of psychotic disorder across Europe (EU-GEI): a multicentre case-control study. The Lancet Psychiatry, 6(5), 427-436.
  7. Fett, A. K. J., Lemmers-Jansen, I. L., & Krabbendam, L. (2019). Psychosis and urbanicity: a review of the recent literature from epidemiology to neurourbanism. Current opinion in psychiatry, 32(3), 232.
  8. Morrison, A. P. (2001). The interpretation of intrusions in psychosis: an integrative cognitive approach to hallucinations and delusions. Behavioural and Cognitive Psychotherapy, 29(3), 257-276.
  9. Morrison, A. P. (2017). A manualised treatment protocol to guide delivery of evidence-based cognitive therapy for people with distressing psychosis: learning from clinical trials. Psychosis, 9(3), 271-281.

About this article

This article was written by Dr Lisa Wood and reviewed by Dr Matthew Whalley, both clinical psychologists. It was last reviewed on 2021/12/07.