Psychosis is a mental problem in which a person’s thoughts are so disturbed that he or she loses touch with reality. The main features are hallucinations, such as hearing voices, and delusions, such as believing that people are trying to harm you.
Hallucinations and delusions can, in turn, lead to disorganized thinking and speech, with racing thoughts, difficulty in keeping mental focus, and incoherent speech. Psychosis may be due to a mental health problem, such as schizophrenia, bipolar disorder, or severe depression.
It may also result from factors such as drug or alcohol abuse or certain brain disorders. Treatment is with antipsychotic medications and psychotherapy, together with treatment of the underlying cause