Psychose
Revu par Dr Colin Tidy, MRCGPDernière mise à jour par Dr Hayley Willacy, FRCGP Dernière mise à jour 15 sept. 2024
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Dans cette série :SchizophrénieMédicaments antipsychotiques
La psychose est un symptôme mais ne constitue pas un diagnostic en soi. La psychose peut être causée par différentes affections mentales, telles que la schizophrénie ou le trouble bipolaire, par une maladie physique ou par d'autres causes, comme le deuil ou le manque de sommeil.
En un coup d'œil
Psychosis means you interpret reality differently from other people.
Common types of psychosis are hallucinations, delusions, and disorganised thinking.
Hallucinations involve sensing things that are not there, like hearing voices.
Delusions are strong, false beliefs not shared by others.
Psychosis can be caused by mental health conditions, illness, or other factors.
See your doctor immediately if you have symptoms of psychosis.
Treatments include talking therapies, medication, and self-help strategies.
Soutien en santé mentale pour les adultes et les enfants
Thérapie cognitivo-comportementale (TCC) et thérapie psychologique en ligne pour les adultes et les enfants de 8 à 17 ans. Les cliniciens agréés de Onebright accompagnent les personnes confrontées à l’anxiété, à la dépression et à d’autres difficultés émotionnelles.
What is psychosis?
Psychosis means that you interpret reality abnormally and in a very different way from other people around you. This is like losing touch with reality.
Psychosis can feel positive. Seeing the faces of loved ones or hearing their voices may be very comforting. However, psychosis can also be very negative and distressing, affecting your behaviour and disrupting your life.
The most common types of psychosis are hallucinations and delusions. You might also experience problems with thinking and speech.
Hallucinations or delusions can make you feel very tired, overwhelmed, anxious, scared, threatened or confused. Delusions about certain people or organisations may make it hard for you to trust them.
People around you may be very dismissive of your experiences and this may make you feel very frustrated.
Psychosis symptoms
The main symptoms of psychosis are:
Hallucinations. This means you hear, see, feel, smell or taste things that aren't really there. A common hallucination is hearing voices (auditory hallucinations).
Delusions. A delusion may occur when you have a strong belief that isn't real or shared by others. A common delusion is wrongly believing that there is a conspiracy to cause you or others harm.
Disorganised thinking and speech.
Hallucinations
Hallucinations may include:
Seeing things that other people don't see.
Experiencing tastes, smells and sensations, such as feeling insects crawling on your skin when there are no insects there.
Hearing voices that other people don't hear (auditory hallucinations).
Delusions
Lots of people have beliefs that many other people don't share. But a delusion is a false belief that no one else shares. You still believe it even if it doesn't make any sense.
Some delusions are positive. You might believe you are very rich, powerful or important. This is sometimes called delusions of grandeur.
Delusions may also be very negative and frightening. You might feel that something or someone is trying to harm you. This is sometimes called having paranoid delusions.
Disorganised thinking and speech
Hallucinations and delusions can make your thoughts and emotions feel confused and disorganised. Disorganised thinking ('thought disorder') can also be a type of psychosis.
Racing thoughts: thoughts go through your head very fast.
Flight of ideas: your thoughts move very quickly from one idea to the next.
Speaking very quickly with other people finding it hard to understand you.
Your speech sounds jumbled and doesn't make sense to other people.
Finding it difficult to keep your attention on one thing.
How long does psychosis last?
How often a psychotic episode occurs and how long it lasts are very variable and will depend on the underlying cause. You might experience psychosis once, have occasional short episodes, or have frequent and prolonged episodes of psychosis.
Causes of psychosis
Psychosis can be a symptom of lots of different mental health problems, including:
Paranoid personality disorder.
Psychosis after childbirth (postpartum psychosis).
Psychosis can also occur in the absence of any underlying mental health condition. Other causes of psychosis include:
Physical illness or injury - eg, with a high fever or following a head injury.
Conditions affectant le cerveau - eg,:
Parkinson's disease or a brain tumour.
When taking street drugs like LSD, amphetamines, phencyclidine (PCP) and cannabis.
Abus d'alcool.
Nitrogen narcosis when diving at depth.
Side-effect of some prescribed les médicaments (par ex., stéroïdes) or when you stop taking a medicine for a mental health condition.
Manque de sommeil.
Hunger.
Bereavement - if you have recently lost someone close to you, you may think you see them or hear them talking to you.
Abuse or trauma - you are more likely to experience psychosis if you have experienced abuse or a very traumatic event.
Psychosis treatment
Treatments for psychosis include:
Auto-assistance
Support from others with psychosis. It often helps to share experiences with other people who experience psychosis. You may be able to find a local support group or a national support group, such as Mind in the UK .
Recognise your triggers. It might be helpful to keep a diary to help you understand what triggers your psychosis or makes it worse. Learn to recognise any warning signs.
Avoid triggers. Once you have identified any triggers, you can try to take steps to avoid them. If you learn to recognise warning signs, you can take action early to try to prevent the psychosis from becoming any worse. Family and friends may also be able to recognise any warning signs.
Learn to relax. Manage stress and try some relaxation techniques when you feel stressed, anxious or busy.
Prends soin de toi. Try to get enough sleep. Eating regularly and keeping to a healthy diet can improve your mood and energy levels.
Exercice. Exercise can really help the way you feel.
Create a crisis plan. When you're feeling well you should talk to close friends and family about what would help you, including who should be contacted for professional help.
Autres traitements
Treatment for psychosis involves using a combination of:
Talking therapies tel que thérapie cognitivo-comportementale (TCC) can help you understand your experiences and develop strategies to deal with them.
Médication. Most people with psychosis will be offered an antipsychotic medicine. You may need other medicines for any mental health condition that is causing the psychosis.
Thérapie familiale. Family therapy may be very helpful if you are going through any difficulties as a family.
Arts therapies can help you express how you are feeling, especially if you find it difficult to talk about your experiences.
Social support. This may include education, employment, or accommodation.
You should see your doctor immediately if you're experiencing symptoms of psychosis. You will usually be referred to a mental health specialist for further assessment and treatment. A very severe psychotic episode may mean you need to be admitted to hospital for treatment.
If you're concerned about someone who seems to be having a psychotic episode, you should contact their doctor or their mental health team or call an ambulance.
Complications of psychosis
People with psychosis are more likely to have drug or alcohol problems. Some people use drugs, alcohol or both as a way of managing their psychotic symptoms. However, this can make the psychotic symptoms worse and cause other problems.
Auto-mutilation and suicide. People with psychosis have increased risk of self-harm and suicide.
Quel est le résultat ?
The outcome (prognosis) is very variable and will depend on any underlying cause. If needed, medication is usually effective but may be needed long-term.
Sélections des patients pour Autres problèmes de santé mentale

Santé mentale
Trouble de la personnalité évitante
La personnalité fait référence à notre façon de nous comporter, de vivre notre vie, et à la manière dont nous nous percevons et interprétons nous-mêmes, les autres, les événements et les situations. Un trouble de la personnalité est une perturbation de notre fonctionnement mental en tant qu'individu, ce qui entraîne des perturbations personnelles et sociales importantes.
par Dr Colin Tidy, MRCGP

Santé mentale
Dysphorie de genre
La dysphorie de genre est le sentiment que votre identité de genre ne correspond pas au sexe biologique que vous êtes. Cela peut vous causer du malheur ou affecter votre santé et votre bien-être. Il existe de nombreuses façons d'obtenir de l'aide et du soutien si vous avez des difficultés en raison de votre identité de genre. Il y a des cliniques d'identité de genre avec une grande variété de professionnels spécialisés dans l'aide aux personnes pour qu'elles soient satisfaites de leur genre. Beaucoup de gens trouvent difficile de discuter de la dysphorie de genre avec leur médecin ou un autre professionnel de la santé, ou ne sentent pas qu'ils obtiennent la compréhension et l'aide dont ils ont besoin. Si c'est le cas, il existe de nombreuses associations caritatives qui fournissent des conseils et du soutien. Les liens vers certaines de ces associations sont inclus dans la section Lectures complémentaires à la fin de ce dépliant.
par Dr Hayley Willacy, FRCGP
Questions fréquemment posées
What is the difference between a strong belief and a delusion?
While many people hold strong beliefs that others don't share, a delusion is a false belief that no one else shares and which you continue to hold even if it doesn't make any sense. Delusions can be positive, such as believing you are very rich, or negative and frightening, like feeling someone is trying to harm you (paranoid delusions).
How can self-help strategies assist with managing psychosis?
Self-help involves several strategies. Sharing experiences with others who have psychosis can be beneficial. Keeping a diary to identify and avoid triggers can help prevent episodes from worsening. Learning relaxation techniques, prioritising sleep, maintaining a healthy diet, and exercising are also important. Additionally, creating a crisis plan with close friends and family while you are well can ensure you receive appropriate support if a severe episode occurs.
What kind of professional support is available for psychosis beyond medication?
Beyond medication, a combination of other treatments is available. Talking therapies like cognitive behavioural therapy (CBT) can help you understand and cope with your experiences. Family therapy can be useful if there are difficulties within the family. Arts therapies offer a way to express feelings, especially if talking is difficult. Social support, including help with education, employment, or accommodation, can also be provided.
Why might someone with psychosis turn to drugs or alcohol?
Some people with psychosis may use drugs or alcohol as a way to cope with their psychotic symptoms. However, this can actually worsen the symptoms and lead to additional problems.
When should someone seek immediate medical help for psychosis?
You should see your doctor immediately if you are experiencing symptoms of psychosis. If the psychotic episode is very severe, hospital admission may be necessary for treatment. If you are concerned about someone else who seems to be having a psychotic episode, you should contact their doctor, mental health team, or call an ambulance.
Lectures complémentaires et références
- Psychosis and schizophrenia; NICE CKS, September 2021 (UK access only)
- Psychosis and schizophrenia in children and young people; NICE Clinical Guideline (January 2013, updated Nov 2022)
- Psychose et schizophrénie chez l'adulte : prévention et prise en charge; Guide clinique NICE (février 2014 - dernière mise à jour mars 2014)
- Griswold KS, Del Regno PA, Berger RC; Recognition and Differential Diagnosis of Psychosis in Primary Care. Am Fam Physician. 2015 Jun 15;91(12):856-63.
- Sunshine A, McClellan J; Practitioner Review: Psychosis in children and adolescents. J Child Psychol Psychiatry. 2023 Jul;64(7):980-988. doi: 10.1111/jcpp.13777. Epub 2023 Mar 6.
À propos du critiqueVoir la biographie complète

Dr Colin Tidy, MRCGP
Médecin généraliste, Auteur médical
MBBS, MRCGP, MRCP (Paediatrics), DCH
Le Dr Colin Tidy est un médecin du NHS, basé dans l'Oxfordshire.
Historique de l'article
Article également disponible en Anglais, Allemand, Espagnol, Français, Italien, Portugais, Hindi, Hébreu, Arabe, and Suédois.
Prochaine révision prévue : 14 sept. 2027
15 sept. 2024 | Dernière version
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