If your baby has patches of red and white, rough skin rashes that have persisted for two months, starting around the navel and now spreading to the back and even the scalp with dandruff-like flakes, it could be an allergic reaction to chemical fiber clothing or other irritants. It’s recommended to use anti-allergy ointment, avoid scratching, eat less spicy food, seafood, and beef or mutton, reduce bathing frequency, and apply an oily baby cream after bathing.