By Dr Ananya Mandal, MD
Psychosis arises as part of another mental health condition. Psychosis is categorized into three main groups, based on the cause of the condition and these include:
Psychosis resulting from a mental or psychological condition
Psychosis resulting from a general medical health condition
Psychosis resulting from drug abuse or alcohol misuse
Psychosis due to mental disorders
Psychosis is a feature of certain mental illnesses, examples of which include:
This is a long term disorder that is typically characterized by hallucinations and delusions.
This is a mood disorder, characterized by a mood that swings between depressive and manic. It is also called manic depressive psychosis.
Major depressive disorder can cause psychosis.
Severe stress, anxiety disorder, panic disorder, dementia, or insomnia may also result in psychosis
Psychosis due to medical disorders
Psychosis may be seen in several debilitating medical conditions such as:
Psychosis due to drug and substance abuse
Drug abuse and alcoholism may also lead to psychosis and examples of substances that can induce the condition include:
Alcohol withdrawal in alcoholics
Amphetamine or methamphetamine
Ecstasy or MDMA
Mephedrone or MCAT
Magic mushrooms or psilocybins
Reviewed by Sally Robertson, BSc
Last Updated: Jan 14, 2014