What is it?
Tremor is an involuntary, rhythmical, shaking movement, usually of the hands, lower arms, and head.
Who gets it?
Tremor occurs as a symptom of some neurological diseases, such as Parkinson's disease and multiple sclerosis, and in people with diseases of or damage to the cerebellum. Some people inherit this condition from a parent who has tremors, or develop it as a side effect of certain drugs or underlying disease. Tremor can affect both men and women.
What causes it?
Tremor occurs when the muscles relax and contract repeatedly. While most people experience a tremor at some time, usually because of fear or excitement, a number of neurological diseases that destroy nerve tissue cause uncontrollable tremor. These include Parkinson's disease and multiple sclerosis. Other causes include stroke or head injury; Wilson's disease, a hereditary disorder in which toxic levels of copper accumulate in the tissues; mercury poisoning; an over-active thyroid gland; and liver encephalopathy. Tremor can occur as a side effect of drugs including amphetamines, antidepressants, antipsychotics, caffeine, and lithium, and as a result of withdrawal from alcohol or addictive drugs.
Tremor is an involuntary, rhythmical, shaking movement, usually of the hands, lower arms, and head.
Who gets it?
Tremor occurs as a symptom of some neurological diseases, such as Parkinson's disease and multiple sclerosis, and in people with diseases of or damage to the cerebellum. Some people inherit this condition from a parent who has tremors, or develop it as a side effect of certain drugs or underlying disease. Tremor can affect both men and women.
What causes it?
Tremor occurs when the muscles relax and contract repeatedly. While most people experience a tremor at some time, usually because of fear or excitement, a number of neurological diseases that destroy nerve tissue cause uncontrollable tremor. These include Parkinson's disease and multiple sclerosis. Other causes include stroke or head injury; Wilson's disease, a hereditary disorder in which toxic levels of copper accumulate in the tissues; mercury poisoning; an over-active thyroid gland; and liver encephalopathy. Tremor can occur as a side effect of drugs including amphetamines, antidepressants, antipsychotics, caffeine, and lithium, and as a result of withdrawal from alcohol or addictive drugs.