Erythematous papules or nodules which over time evolve into plaques with underlying intercommunicating sinuses. Most often occurs on the scalp vertex or occiput. Perifollicular, comedonal papules ...

Similar to the bumps ... scalp is simply an extension of your skin, says Dr. Gohara. “Wash your hair regularly to remove ...

It tends to affect oily areas of your body ... rather than the follicle or the skin on your scalp. It causes hard, stone-like bumps, or nodules, on the hair. In fact, "piedra" is the Spanish ...