What could be the cause of pain in your left underarm and coldness in your left arm and hand?

sharp pain in my left hand

Question is a little too vague, more details would be needed.

If it has a numbness and aching feeling to it and it effects the first three fingers and symptoms are worse at night you should be evaluated for carpal tunnel symptoms. If you have finger joint pain...

could be the beginnings of a heart attack or the heart telling you that it isn't getting enough oxygen. In the field of cardiology this is called atypical chest pain. I would recommend seeing a...

Cause of Shooting Pains. This is quite possibly from something pinching the nerve in your arm. It could be anything from a repetitive strain injury to a tumor next to the nerve. Try taking it easy...