Dandruff, a common scalp problem ... and are painful. You will notice red bumps with white or blackheads if you have scalp acne. Build-up of sweat, dead skin, and oils, can lead to this problem.

For instance, “rosacea looks a lot like acne because you can get bumps on the face ... which manifests as flaky dandruff and scaly red patches on the scalp. The condition can be exacerbated ...