Muscle twitching occurs when nerves misfire, causing groups of muscle fibers to contract. This is common to multiple sclerosis MS , due to nerve fiber damage that affects signaling between your nerves and muscles. But there are other possible causes of the various types of muscle twitching too, from fatigue and nutrient deficiency to thyroid disease and more. Some are benign, but others require medical attention. If you have MS, your muscle twitching may be due to your disease. Or it could be owed to one of these other causes that you may not realize you're living with as well.
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Benign essential blepharospasm is a movement disorder dystonia of the muscles around the eye. No one knows exactly what causes it, but researchers believe it may be caused by a malfunction of certain cells in the nervous system called basal ganglia. Very rarely, eye twitching may be a sign of certain brain and nervous system disorders. When it is, it's almost always accompanied by other signs and symptoms. Brain and nervous system disorders that can cause eye twitching include:.
Many cases are the result of stress , anxiety , or muscle strain. Finger twitching and muscle spasms may be more prevalent now than ever because texting and gaming are such popular activities. While most cases finger twitching is mild, some instances may be an indication of a serious nerve condition or movement disorder. Finger twitching is a symptom spurred by a number of possibly factors or disorders.
Back to Health A to Z. Twitches are common and very rarely a sign of anything serious. They often go away on their own, but see a GP if a twitch lasts more than 2 weeks. Find out about using the NHS during coronavirus. Page last reviewed: 9 February Next review due: 9 February