Why does my right arm go numb?

Injuries can lead to numbness in the arm as well. Any injury which leads to lowered circulation in the right arm may cause it to go numb. This includes conditions such as frostbite or atherosclerosis. A pinched nerve in the back or neck can lead to numbness in the hand or arm. read more

An injury to the nerves in the arm, neck, shoulder, or even the back can cause a numbness sensation to set in the right arm. Injury can include compression of the blood vessels, an infection, or tissue scarring. read more

Normally, whether your right or your left arm is numb depends on where the affected nerves are located in your body. That said, arm numbness and pain signifying a heart attack is more commonly associated with the left arm, according to the American Heart Association. read more