Psychotic disorders include severe mental disorders which are characterized by extreme impairment of a person’s ability to think clearly, respond emotionally, communicate effectively, understand reality, and behave appropriately. Psychotic symptoms can be seen in teenagers with a number of serious mental illnesses, such as depression, bipolar disorder (manic-depression), schizophrenia, and with some forms of alcohol and drug abuse. Psychotic symptoms interfere with a person’s daily functioning and can be quite debilitating. Psychotic symptoms include delusions and hallucinations.