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Psychosis
Psychosis occurs when a person loses contact with reality. The person may:
- Have false beliefs about what is taking place, or who one is (delusions)
- See or hear things that are not there (hallucinations)
Causes
Medical problems that can cause psychosis include:
-
Alcohol
and certain illegal drugs, both during use and during withdrawal
Alcohol
Alcohol use disorder is when your drinking causes serious problems in your life, yet you keep drinking. You may also need more and more alcohol to f...
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Brain diseases, such as
Parkinson disease
,
Huntington disease
Parkinson disease
Parkinson disease causes certain brain cells to die. These are the cells that help control movement and coordination. The disease leads to shaking ...
Read Article Now Book Mark ArticleHuntington disease
Huntington disease is a disorder in which nerve cells in certain parts of the brain waste away, or degenerate. The disease is passed down through fa...
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-
Dementia
(including
Alzheimer disease
)
Dementia
Dementia is a loss of brain function that occurs with certain diseases. It affects memory, thinking, language, judgment, and behavior.
Read Article Now Book Mark ArticleAlzheimer disease
Dementia is a loss of brain function that occurs with certain diseases. Alzheimer disease is one form of dementia. It affects memory, thinking, and...
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- Some prescription drugs, such as steroids and stimulants
-
Some types of
epilepsy
Epilepsy
Epilepsy is a brain disorder in which a person has repeated seizures over time. Seizures are episodes of uncontrolled and abnormal firing of brain c...
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Psychosis may also be found in:
-
Most people with
schizophrenia
Schizophrenia
Schizophrenia is a mental disorder that makes it hard to tell the difference between what is real and not real. It also makes it hard to think clearl...
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Some people with
bipolar disorder
(manic-depressive) or severe depression
Bipolar disorder
Bipolar disorder is a mental condition in which a person has wide or extreme swings in their mood. Periods of feeling sad and depressed may alternat...
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Symptoms
A person with psychosis may have any of the following:
- 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
)
Hallucinations
Hallucinations involve sensing things such as visions, sounds, or smells that seem real but are not. These things are created by the mind.
Read Article Now Book Mark Article - 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
Electrolyte
Electrolytes are minerals in your blood and other body fluids that carry an electric charge. Electrolytes affect how your body functions in many ways...
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Blood tests for syphilis
and other infections
Blood tests for syphilis
The VDRL test is a screening test for syphilis. It measures substances (proteins), called antibodies, that your body may produce if you have come in...
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-
MRI
of the brain
MRI
A magnetic resonance imaging (MRI) scan is an imaging test that uses powerful magnets and radio waves to create pictures of the body. It does not us...
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Treatment
Treatment depends on the cause of the psychosis. Care in a hospital is often needed to ensure the person's safety.
Antipsychotic drugs, which reduce hallucinations and delusions and improve thinking and behavior, are helpful.
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. In this case, treatment with antipsychotic medicine may be brief.
Some chronic conditions, such as schizophrenia , may need lifelong treatment with antipsychotic drugs to control symptoms.
Schizophrenia
Schizophrenia is a mental disorder that makes it hard to tell the difference between what is real and not real. It also makes it hard to think clearl...
Possible Complications
Psychosis can prevent people from functioning normally and caring for themselves. 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, take the person to the emergency room to be seen by a doctor.
Prevention
Prevention depends on the cause. For example, avoiding alcohol prevents psychosis caused by alcohol use.
References
American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders. 5th ed. Arlington, VA: American Psychiatric Publishing. 2013.
Freudenriech O, Brown HE, Holt DJ. Psychosis and schizophrenia. In: Stern TA, Fava M, Wilens TE, Rosenbaum JF, eds. Massachusetts General Hospital Comprehensive Clinical Psychiatry . 2nd ed. Philadelphia, PA: Elsevier; 2016:chap 28.
Review Date: 2/21/2016
Reviewed By: Timothy Rogge, MD, Medical Director, Family Medical Psychiatry Center, Kirkland, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.
