pityriasis rosea (DOID:8892)
Alliance: disease page
Synonyms: Pityriasis circinata
Alt IDs: ICD10CM:L42, ICD9CM:696.3, MESH:D017515, NCI:C26855, UMLS_CUI:C0032026
Definition: A dermatitis that is characterized by an initial large round spot on the chest, abdomen, or back, often referred to as a herald patch, that is usually followed within a week by a distinctive pattern of similar but smaller papules on the torso, arms, and legs.