Psychosis is a mental disorder in which a person loses contact with reality. The two most prevalent symptoms include hallucinations and delusions. Hallucinations are when a person hears, sees, or feels things that are not real. Delusions, on the other hand, are strong beliefs that are not shared by others. The combination of hallucinations and delusional thinking can cause severe stress and changes in behavior.

Additional symptoms, depending on the underlying cause of the disorder, can include disorganized thoughts, incoherent speech and self-injury. Patients may have trouble sleeping, self-isolate, lack motivation and have difficulty carrying out daily activities. Symptoms do not go away over time and will worsen without treatment.

Psychotic episodes are periods when patients experience symptoms. The frequency or duration of an episode depends on the underlying causes of the psychosis. Certain mental health conditions can cause psychosis. These include bipolar disorder, schizophrenia, and severe depression. Psychosis can also be triggered by trauma, stress, substance abuse, and a physical condition such as a brain tumor.

Treatment for psychosis involves a combination of antipsychotic medicines, psychological therapies, and social support.