CLASSIFICATION:
I
Infectious-
Superficial- (usually suppurative)-
Bacteria, fungus, syphilis, virus
Deep- (usually granulomatous)-
Fungi or bacteria
II Non infectious-
Superficial- (usually suppurative)-
Acne vulgaris, rosacea, follicular
mucinosis, steroid induced.
Deep- (usually granulomatous)-
Acne vulgaris- conglobata & keloidal forms and perforating form.
Deep- (scarring) folliculitides-
Folliculitis decalvans ; Folliculitis keloidalis nuchae.
Spongiotic-
Fox fordyce disease, atopic dermatitis,
pruritic folliculitis of pregnancy.
III
Perifolliculitis-
Predominantly lymphocytic- Lichen planopilaris, pityriasis rubra
pilaris.
Predominantly granulomatous-
Rosacea, dermatitis perioralis. |