Finally there was the reader who suffers from a constant rash around the thighs. What could he do? Start off by using a nonbiological washing powder, says one reader, and lose weight as your thighs rubbing together could be causing the rash. It could also be caused by a food intolerance, which, in one reader’s case, was coffee. Try calendula ointment on the rash, which should help clear it, as might liberal applications of vitamin A and D cream after first cleansing the area thoroughly.