What is folliculitis?

Superficial bacterial infection of hair follicles (never seen in places where no hair), small raised red occasionally pruritic pustules <5mm diameter, may be STD, usually due to S.aureus, pseudomonas (swimming pools), candidiasis (marked erythema), herpetic... Pustule is fluid filled lesion w/purulent fluid centered by a hair w/perifollicular erythema, variable in number lesions on hairy regions Clinical forms (stye [eyelash], sycosis [beard- shaving induces chronicity and extension])