heart attack comes to mind, possibly an auto immune attack as well, but then again it could be that your left arm is being crushed by a large weight and you are losing sensation in that arm as it is...
neuropathy .
it might be diabetic neuropathy where the nerves are being damaged by the high sugar level in the blood. Do not let anyone tell you that it cannot be helped,especially with a non drug....
Certain types of headaches can cause tingling and/or numbness in the body. This is a symptom that really needs diagnosis by a neurologist or headache specialist though, as it could also indicate...
There are few reasons but first I should say that what you describe falls among the indicators of a cardiovascular incident -- a heart attack. If you also experience pain in your chest, sweating,...