Compression of brachial plexus nerves by cervical spines, Continuous pressure on axilla, accessroy rib, direct injury to ulnar nerve or median nerve can lead to such condition.
It could be a nerve problem in your elbow. For instance, leaning constantly on it or doing something with your right arm that is repetitive, like painting or scrubbing. Any swelling in that area might compress a nerve.
Sometimes when you sleep on one hand or foot spasms
Hand tremor for too long, tingling sensation happens in hand or foot. Also hypertensives and diabetics can have this problem.