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You may be showing signs of Carpal tunnel syndrome
. It has many causes. As of now, use your Computer minimally. Eat fresh fruits and vegetables. Drink enough water and most important, get enough sleep of 6-8 hours a day. If the sensations are not only in your palm and present even in your arm then the problem lies in your neck nerves for which it is best you visit the Neurologist
. Do not bend your head much on the side that the hand pains, try to avoid that side.