Tingling in right arm and hand?

Paresthesia: Altered sensation of the arm and hand is often produced by compression of the nerve somewhere along the course of the nerve from your neck to your fingertips. Common locations are in the neck, at the intermuscular septum in the upper arm, at the "funnybone" and in the carpal tunnel in the wrist.

Nerve symptoms: Might be due to carpal tunnel, nerve pinching at elbow (cubital tunnel), but also neck and shoulder may have problems. Sort out and confirm with your doc, and perhaps get confirmatory testing. Occas, bilat symptoms due to some medicines, and rarely an issue with cardiac disease (but over left arm, not the right).