This condition often occurs in adolescence due to an increase in sebaceous gland activity, with a rash in a “cape-like” pattern, on the shoulders, back, and neck. Bacterial folliculitis is the ...

Medically reviewed by Susan Bard, MD Different conditions can cause pimples on the scalp or along the hairline. Causes range from clogged pores to inflamed hair follicles and excessive sebum (natural ...