folliculitis

Folliculitis is the infection and inflammation of one or more hair follicles. The condition may occur anywhere on hair covered skin. The rash may appear as pimples that come to white tips on the face, chest, back, arms, legs, buttocks, or head.

rash (reddened skin area)

pimples or pustules located around a hair or follicle; may be confused with chicken pox

typically occur on neck, armpit, or groin

may present as genital lesions

spreading from leg to arm to body through improper treatment with antibiotics ...