Folliculitis occurs due to inflammation of the superficial hair follicle, resulting in follicularly centered papules and pustules that may later form crusts. The etiology of folliculitis can be variable, with bacterial, fungal, viral, parasitic, and noninfectious causes reported. Predisposing factors include nasal carriage of Staphylococcus aureus, occlusion, maceration, hyperhydration, complicating pruritic skin diseases, vigorous application of topical medications, shaving, exposure to oils and certain chemicals, and exposure to heated or contaminated water. Several anatomic areas may be involved, including the face, scalp, trunk, extremities, genital region, and occluded areas such as the axillae.