ICD-11 classes
14 Diseases of the skin
Skin disorders involving certain specific body regions
Skin disorders involving the head and neck
EG30 — Skin disorders localised to the scalp
EG30.2 — Pityriasis amiantacea

ICD-11 EG30.2 — Pityriasis amiantacea

Pityriasis amiantacea refers to a reaction pattern on the scalp where large adherent are attached to the growing hairs and overlap like tiles on a roof. The abnormality may be localised and confined to a small patch or widespread involving the entire scalp. The underlying scalp is often moist and inflamed. The condition may occur on its own or may be associated with inflammatory disorders such as seborrhoeic dermatitis and psoriasis or with underlying dermatophytosis (tinea capitis).

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.