Psychosis is a mental disorder in which a person has lost some contact with reality.  There may be severe disturbances in thinking, emotions or behavior.  Psychotic disorders are not as common as depression and anxiety disorders, affecting just over 1% of the population.  Psychotic disorders include Schizophrenia, Psychotic Mania, Psychotic Depression, Schizoaffective Disorder and Drug-Induced Psychosis.
Symptoms:
Clinical depression lasts for at least two weeks and affects a person’s emotions, thinking, behavior