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Psychosis



Psychosis is a loss of contact with reality that usually includes:

False beliefs about what is taking place or who one is (delusions)
Seeing or hearing things that aren’t there (hallucinations)

Causes

A number of medical problems can cause psychosis, including:

Alcohol and certain illegal drugs, both during use and during withdrawal
Brain diseases, such as Parkinson’s disease, Huntington’s disease, and certain chromosomal disorders
Brain tumors or cysts
Dementia (including Alzheimer’s disease)
HIV and other infections that affect the brain
Some prescription drugs, such as steroids and stimulants
Some types of epilepsy
Stroke

Psychosis (or psychotic symptoms) may also be found in:

Most people with schizophrenia
Some people with bipolar disorder (manic-depressive) or severe depression
Some personality disorders

Symptoms

Psychotic symptoms may include:

Disorganized thought and speech
False beliefs that are not based in reality (delusions), especially unfounded fear or suspicion
Hearing, seeing, or feeling things that are not there (hallucinations)
Thoughts that “jump” between unrelated topics (disordered thinking)

Exams and Tests

Psychiatric evaluation and testing are used to diagnose the cause of the psychosis.

Laboratory testing and brain scans may not be needed, but sometimes can help pinpoint the diagnosis. Tests may include:

Blood tests for abnormal electrolyte and hormone levels
Blood tests for syphilis and other infections
Drug screens
MRI of the brain

Treatment

Treatment depends on the cause of the psychosis. Care in a hospital is often needed to ensure the patient’s safety.

Antipsychotic drugs, which reduce hallucinations and delusions and improve thinking and behavior are helpful, whether the cause is a medical or psychiatric disorder.

Outlook (Prognosis)

How well a person does depends on the cause of the psychosis. If the cause can be corrected, the outlook is often good, and treatment with antipsychotic medication may be brief.

Some chronic conditions, such as schizophrenia, may need life-long treatment with antipsychotic medications to control symptoms.

Possible Complications

Psychosis can prevent people from functioning normally and caring for themselves. If the condition is left untreated, people can sometimes harm themselves or others.

When to Contact a Medical Professional

Call your health care provider or mental health professional if you or a member of your family is losing contact with reality. If there is any concern about safety, immediately take the person to the nearest emergency room to be seen by a doctor.