causes of a twitching thumb
Twitching of the thumb is actually the twitching of a muscle caused by the nerve impulse. The medical term for muscle twitching is fasciculation. The common symptoms of thumb twitching are tingling sensation and numbness. It is a normal phenomena and is mostly neglected.
1 Twitching in your finger or thumb are believed to be possible causes. 2  Multiple Sclerosis â This familiar central nervous system disease offers characteristic features of loss of muscle coordination and numbness. 3  Finger twitching is often one of its easiest detected symptoms.
Possible Causes. 1  Carpel Tunnel Syndrome â If you have carpel tunnel syndrome, there is a nerve that is nicked in your wrist that passes through your carpel tunnel. 2  This is commonly done to help relieve pressure associated with the median nerve. 3  In doing so, it often leads to twitching of the thumb or index finger.