I recently shaved my head, I do this once every two months and I notice some round red patches that were not there before. They are completely flat, I had no hair loss in the areas and they are not itchy at all. The patches began hurting after I shaved my head. I am thinking tinea capitis but that's just a guess. The only flaking I had was general dandruff I've always had and treated with anti dandruff shampoo, this red spot is new.