I've had alcohol in excess, numb fingers on left hand, what is going on?

Long term alcohol: Use can lead to neuropathy. While this is a possible cause of your numbness, there can be others, including injuries or trapped nerves in neck, wrist, or elbow. Talk to your doctor to get vit b and Folic Acid levels on you to see if these could be a cause of your neuropathy. If those are normal, discuss other causes. Most importantly, talk to them about solutions to using too much alcohol.