I have HSV-2 and recently had an outbreak. I've been taking valtrex for a week now and just noticed this small blister on my thumb. It doesn't hurt but itches a little. I do not have access to a doctor right now and would really appreciate an opinion. I've been careful to be washing my hands and haven't had any cuts on my thumbs. I really want to take care of this and make sure it doesn't get infected and am very worried. What should I be looking for in terms of whitlow? Is it possible whitlow could manifest itself as one single small blister? There is no pain or anything. Please help.