There are several types of psychotic disorders, each with its own specific features and diagnostic criteria. The following are some of the major types: Schizophrenia : Schizophrenia is a chronic and severe psychiatric disorder characterized by a combination of symptoms, including hallucinations, delusions, disorganized thinking, disorganized or catatonic behavior, and negative symptoms (such as diminished emotional expression or avolition). It typically begins in late adolescence or early adulthood and can significantly impair a person's ability to function in daily life. Schizoaffective disorder: Schizoaffective disorder combines symptoms of both schizophrenia and mood disorders, such as major depressive episodes or manic episodes. Individuals with schizoaffective disorder experience periods of psychosis, along with mood disturbances. The psychotic symptoms can occur alongside or separate from the mood episodes. Brief psychotic disorder: Brief psychotic disorder is characterized by the sudden onset of psychotic symptoms that last for a brief period, typically less than one month. The symptoms may be triggered by a stressful event or situation. Once the episode ends, the person generally returns to their previous level of functioning. Delusional disorder: Delusional disorder involves persistent and non-bizarre delusions that are not accompanied by other prominent psychotic symptoms, such as hallucinations or disorganized thinking. The delusions typically revolve around a specific theme, such as persecution, jealousy, or somatic symptoms. Substance-induced psychotic disorder: This type of psychotic disorder is caused by the use or withdrawal from substances such as alcohol, hallucinogens, stimulants, or other substances that can induce psychosis. The psychotic symptoms arise as a direct result of the substance use or withdrawal and are not primarily caused by another underlying mental disorder. Psychotic disorder due to a medical condition: Some medical conditions, such as certain neurological disorders, brain tumors, infections, or autoimmune disorders, can lead to psychosis. The psychotic symptoms arise as a consequence of the medical condition and are not better explained by another primary psychiatric disorder.   It's important to remember that proper diagnosis and treatment of psychotic disorders should be carried out by qualified mental health professionals. If you or someone you know is experiencing symptoms suggestive of a psychotic disorder, seeking professional help is essential for an accurate diagnosis and appropriate treatment plan.