i have had sudden numbness that came out of nowhere, kind of at the roof of my mouth, but it s actually the roof of my mouth just above my two front teeth and nowhere else (not the entire roof). Earlier before that I was bitten by something on my left arm while out to lunch, coincidentally, maybe not related. I have no pain and it wasn t a gradual thing over days, it just came all of a sudden, since around 2:00 pm. today and it s now 8:12 and still numb.