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Alternative Names Return to topOBS; Organic mental disorder (OMS); Chronic organic brain syndrome
Definition Return to top
Organic brain syndrome (OBS) is a general term that refers to diseases (usually not psychiatric disorders) that cause decreased mental function.
Causes Return to top
OBS is common in the elderly. It is not a part of the normal aging process, however.
OBS is not a separate disease, but is a general term used to describe physical conditions that can cause mental changes.
Disorders associated with OBS include:
Other conditions that may be related to organic brain syndrome include:
Symptoms Return to top
Symptoms can differ based on the disease. In general, organic brain syndromes cause:
Exams and Tests Return to top
Tests depend on the disorder, but may include:
Treatment Return to top
Treatment depends on the disorder. Many of the disorders have mainly supportive care to assist the person in areas where brain function is lost.
Medications may be needed to reduce aggressive behaviors that can occur with some of the conditions.
Outlook (Prognosis) Return to top
See the specific disorder. Some disorders are short-term and treatable, but many are long-term or get worse over time.
Possible Complications Return to top
People with OBS often lose the ability to interact with others or function on their own.
When to Contact a Medical Professional Return to top
Call your health care provider if: