What are some causes of numbness in my left arm?

Answer by  avalanchebad (164)

Since it's your left arm, the scariest cause would be heart problems. However, it could also be something like a pinched nerve, or carpal tunnel, if you do a lot of repetitive work.

Answer by  Latin4 (11170)

One of the most frightening thing is a heart attack. Either call 911 or go to the emergency room and have it checked out. Or it can be a pinched nerve in your shoulder area. Either way it is an emergency.

Answer by  JamesRaymond (93)

Tingling maybe caused by muscle tension in your shoulders causing pressure on nerves. If the tingling is near your wrist, you could have carpel tunnel syndrome. If you have diabetes, you may be experiencing nerve damage. Left arm tingling is a sign of heart attacks.

Answer by  TwoToneDodge (2204)

Heart attack. Numbness is the left arm is alomst always a sign of a heart attack. Bursitis in the sholder can cause it as well as simply sleeping on it wrong.