Dystonia is a condition that makes your muscles contract without warning (muscle spasms). It can cause unwanted jerking of muscle groups that can be uncomfortable. This condition is rarely life threatening.
CAUSES
A dystonic reaction is most often a side effect to a particular medicine. These reactions occur when the normal patterns of the nerve receptors are upset by a particular medicine and the imbalance causes multiple types of muscle spasm. This condition may also be caused by nervous system disorders, such as:
• Stroke.
• Multiple sclerosis (MS).
• Cerebral palsy.
The cause may also be unknown (idiopathic).
RISK FACTORS
This condition is more likely to develop in people who take certain medicines, most