Home > Mental health > Brain > Neurological conditions Updated 30 June 2014 12 types of psychosis Psychosis is associated with several medical disorders and conditions. Here's more about twelve of them. 3 iStock Related More kids diagnosed with mental health disabilities More than just the blues Five mental disorders have common gene problem Ask CyberShrink » Talk Heart to heart forum » How brain injury affects you Transparent brains Psychosis is associated with several medical disorders and conditions. Some of the different types of psychosis include:Schizophrenia: a psychiatric disorder characterised by disordered thinking and behaviour, which often includes delusions and hallucinations. Psychotic symptoms are experienced for at least six months, together with significant social or occupational dysfunction.Schizophreniform disorder: symptoms are similar to schizophrenia, but persist for between one and six months.Schizoaffective disorder: prominent mood symptoms occur with the characteristic symptoms of schizophrenia, but occasionally psychotic symptoms are experienced in the absence of mood symptoms.Delusional disorder: involves holding strong, false beliefs (delusions). Hallucinations are usually not present. Apart from the impact of the delusions, psychosocial functioning may not be markedly impaired nor behaviour blatantly strange. However, under some circumstances delusions are sufficiently false to cause problems with day-to-day life.Substance-induced psychosis: drug and alcohol use or withdrawal can result in psychotic symptoms. These may disappear once the effects of the substances or withdrawal symptoms wear off. In some cases, psychosis persists after the initial substance-induced psychosis. This is common with stimulant drugs, e.g. methamphetamine (“tik”).Dementia: psychotic symptoms may appear with memory disturbances in conditions that cause physiological deterioration of the brain, such as a head injury, AIDS, post-encephalitis, Alzheimer’s Disease or a brain tumour.Bipolar disorder (manic depression): psychosis generally appears as part of a more general severe mood disturbance. Psychotic symptoms tend to match your mood. (For example, when depressed, you may hear voices urging you to commit suicide.)Major Depressive Disorder: psychosis can be a feature of a severe major depression.Postpartum psychosis: psychosis that may develop during the six month period after childbirth. This is usually part of a severe mood disorder.Delirium: psychotic symptoms may be part of an acute confusional state that results from another severe medical disorder, such as meningitis, septicaemia or after an epileptic convulsion.Brief psychotic episode: psychotic symptoms appear suddenly in response to a recognisable and highly stressful life event, such as being a victim of violent crime. Symptoms may be severe but are short-lived: the psychosis lasts between one day and one month. You may or may not be aware of your bizarre behaviour.Psychosis due to a general medical condition: psychotic symptoms may appear as a result of brain tumours, epilepsy, and other chronic medical conditions. The psychotic symptoms can sometimes be the first sign of the underlying medical condition. Reviewed by Dr Bonga Chiliza, psychiatrist, Department of Psychiatry, University of Stellenbosch More in Mental health Living with nerve damage More: BrainNeurological conditions advertisement Read Health24’s Comments Policy Comment on this story 3 comments Comments have been closed for this article. Logout Comment 0 characters remaining Share on Facebook Loading comments... Other news Lifestyle Air pollution increases heart disease risk Diet and nutrition Balloon-in-a-pill the latest way to curb obesity Medical Antidepressants not just for depression any more Medical Restaurateur convicted of peanut curry death Medical A story of hope: HIV+ graduates inspire others Lifestyle SA set to join global plain cigarette packaging trend From our sponsors Cipla Nutrition- Dummies Guide to Enduro Prep 4 clever ways to stay active this winter Key signs you need a change in diet Clear your head with fast-acting, long-lasting Sinutab® Nasal Spray Live healthier PMS, depression & suicide » Don't let PMS get you down Symptoms of PMS Diagnosing PMS The link between PMS, depression and suicidal thoughts The symptoms of premenstrual dysphoric disorder (PMDD) are similar to those of PMS, but generally more severe – and could include depression and even thoughts of suicide. A vegan marathon runner » Comrades: don't run if you're ill Fuel your body for the Comrades Running the Comrades Marathon on a vegan diet Donovan Will, who is training to run the Comrades Marathon, speaks to Health24 about his plant based diet and fears of getting injured ahead of the big race.