Condition : Psychosis
What is psychosis?
Psychosis causes you to see things differently from those around you. Another way of describing it is that you lose some contact with reality.
If you experience symptoms of psychosis, it is often described as having a psychotic episode.
The three main symptoms of psychosis are:
- hallucinations – sensing things that appear real to you but only exist in your mind, such as hearing voices, seeing people who aren’t there, feeling bugs crawling on your skin or your internal organs moving, or smelling or tasting things that aren’t present
- delusions – having strong beliefs that are not shared by others, like a belief that there's a conspiracy to harm you, that you can control the weather, or that an external force is controlling you
- disordered thinking and speaking – seeing links between things that other people don’t and racing thoughts, resulting in difficulties with concentration, not completing sentences, switching topics suddenly, and generally very fast and stumbling speech
These symptoms and can cause severe distress and changes in behaviour.
What causes psychosis?
Psychosis can be a symptom of a mental health problem, such as:
- schizophrenia – being unable to distinguish your own thoughts and ideas from reality
- psychotic depression – experiencing hallucinations and delusions while having severe depression
- bipolar disorder – having episodes of low mood (depression) and highs or elated mood (mania)
- postpartum psychosis – having symptoms of psychosis that start soon after giving birth (usually within the first two weeks)
- severe stress or anxiety
- drug or alcohol misuse
If you have a family history of psychosis you may be at higher risk of psychosis.
The following physical health problems have also been known to trigger psychotic episodes in some people:
- conditions affecting the brain, such as multiple sclerosis (MS), a brain tumour, or dementia
- sudden illness or injury, such as a high temperature or head injury
- a lack of sleep
- side effects of prescribed medicine
- low blood sugar (hypoglycaemia)
- a serious infection, such as syphilis or malaria
- HIV and AIDS
Next steps
Browse our recommended external support resources to learn more about your condition and ways to manage it.
If you need further support or have concerns, a Healthcare Professional is here to help. Reach out for professional medical advice tailored to you.
Discover services and support options available to help you with your health and wellbeing.
Managing your health
There are a number of national and local organisations who can support you and help you manage health conditions at home.
Related services
Early Intervention in Psychosis Service
- Adults
Assessment and intervention for adults experiencing psychosis for the first time, or who may be at risk of developing psychosis.
Early Intervention in Psychosis Service: Go to serviceEarly Intervention in Psychosis and Mania Service for children and young people
- Children & young people
Help for young people (up to the age of 18) who may be experiencing psychosis or mania, or showing early signs of developing psychosis.
Early Intervention in Psychosis and Mania Service for children and young people: Go to serviceExternal support
Further information on the NHS UK website
Action on Postpartum Psychosis (APP)
Support and advocacy for people affected by postpartum psychosis
Hearing Voices Network (HVN)
Support for people who hear voices, see visions, or have other unusual perceptions
Mental Health Foundation
Research and campaigns to prevent poor mental health
Rethink Mental Illness
Advice and information about living with a mental health problem

