What causes uncontrollable shaking of the thumb nail?
Patient: Hey doctor. Been having a weird thumb shaking happening in the past day. When I fully extend my left thumb it begins to shake almost uncontrollably. I have a cold and have been taking nyquil/dayquil. And also taking ginseng in the morning for energy during activities in the day. Very uncomfortable and is very annoying PLEASE HELP! Doctor: Hi Dear,Welcome to HCM.Understanding your concern. As per your query you have uncontrollable shaking of the thumb nail. Well there can be many reasons for symptoms you mention in query like low blood sugar , too much coffee and tea or essential tremor. The symptoms mentioned in query can also termed focal task-specific tremor or dystonia. In some cases performing some particular task or some particular trigger factory will repeatedly start the tremor/dystonia after a certain amount of time. The symptoms can also be first sign of Parkinson’s disease or psychogenic tremor . I would suggest you to consult neurologist for proper examination . Doctor may prescribe atenolol , gabapentin , clonazepam or botox injections . In some cases doctor may recommend physical therapy or surgery . For now do stretching exercises under expert , keep your hand in hot water tub for 15 minutes and avoid alcohol and caffeinated product.Hope your concern has been resolved.Get Well Soon.Best Wishes,Dr. Harry Maheshwari