A follicular disorder with keratotic papules and scaling plaques; distinct from the broad historical label pityriasis rubra.
Fine scalp scaling, commonly the relatively uninflamed scalp form of seborrhoeic dermatitis.
Shedding of the surface layers of the epidermis.
A historical descriptive group of skin disorders with fine bran-like desquamation. Its former varieties do not constitute one modern disease.
An unstable historical category for dark eruptions or pigmentation, sometimes described as dark pityriasis versicolor. It cannot be assigned one modern pathogen from the name alone.
Historical name for a red, scaling eruption. It is not automatically equivalent to pityriasis rubra pilaris.
Historical description of fine scalp scaling; many cases correspond to dandruff. The name alone does not establish a cause.
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