I am not diabetic but I get those stabbing pains and it will be in the oddest of places. Just like youy explained it feels like someone is stabbing me with a needle and just in one tiny little spot then it's gone. It only lasts for a few seconds and hurts when it happens. I always tell my kids that someone somewhere has a voodoo doll of me and likes to stab it everyonce in a while. LOL!!!