I just adopted a kitten from PetSmart (BARC) about a week and a half ago. She is 4 months old. I noticed she had some little scab on her little head but I never noticed anything else. Now she has a little black on her nose (not sure what that is) and her forearm of a front leg has some hair missing and it looks like a patch has grown back. I don't recall seeing it before but then again I never really looked. I can see a little of the skin under. Should I take her to the vet or just give it another week?