Whenever I drink a larger quantity of alcohol (such as more than two to three beers) my face begins to go numb, not completely as to where I can't feel it but similar to a pins and needles feeling. I've also noticed when I wake up the next morning my face is fine, but my lower back will be sore. I was wondering if this is normal, or something I should worry about. I was also wondering if you could tell me why it happens.