Bumpy Itchy Scalp No Dandruff. The lumps can be colorless or dark brown in color. “when you don’t wash your hair often enough, natural oils, dirt, and product residue build up on your roots and scalp, causing you to itch and scratch,” says dr.
The rash can be anywhere on your body. The topical application of antibiotics can also help reduce the itch. Seb derm, as most derms call it, is one of the most common scalp conditions.