Psychotic disorders can take the form of hallucinations (e.g., hearing voices or seeing people or things that are not really there) and delusions, believing things about oneself or the surrounding world when they have no basis in reality (for example, destined to be president, a savior of the world, able to fly or read people's thoughts.)
The general term for people who suffer from hallucinations or delusions is "psychotic." Conditions that are characterized by psychosis include:
A chronic illness usually appearing in early adulthood and marked by chronic or episodic psychosis and poor social functioning
A combination of schizophrenia and a mood disorder, such as bipolar disorder or depression
Believing things that are not true but are in the realm of reality. ("Someone is trying to hurt me.")
Hallucinations and delusions can also occur during the manic high of bipolar disorder, the depths of depression, or in throes of substance intoxication or withdrawal.
Schizophrenia & Other Psychotic Disorders are often controllable with medication – but it's essential for patients to have some support for regularly taking their medications, which can be a challenge with these conditions.