Catalog

Pityriasis rotunda

No MMS code

Link to WHO Definition

Pityriasis rotunda – http://id.who.int/icd/entity/873448556

Pityriasis rotunda is an uncommon dermatosis of unknown aetiology in which circular, sharply defined patches of dry skin with ichthyosiform scaling form on the buttocks, thighs, abdomen, back or upper arms. They may be single or multiple and tend to enlarge slowly and coalesce over time before then remaining fixed and unchanged throughout life. It is seen more commonly in East Asia and Southern Africa than in Europe or the Americas.