Hello, Thank you for your query in HCM. You have Myokymia, a form of involuntary muscular movement, usually as continuous rippling movements. The commonest site is the face especially the eye lids, but can occur anywhere in the body. It may be caused by too much caffeine, anxiety, fatigue, stress, overwork, overexposure to computer/television monitors and a lack of sleep. Use of certain drugs or alcohol may also be factors. Most of the time it is benign and avoidance of precipitating factors is all that is needed. Occasionally it may be due to certain neurological diseases. If it persists, then you must see a neurologist and have the test EMG to learn more about the problem and causative factors. If you any further queries for me, you can search for me at HCM web site. Best wishes, Dr. Noble Zachariah