erythrokeratoderma pityriasis rubra pilaris https://github.com/monarch-initiative/mondo/issues/3470 MESH:D010916 NCIT:C85014 UMLS:C0032027 NORD:1582 ICD10CM:L44.0 MONDO:0100017 A group of skin conditions that cause constant inflammation and scaling of the skin. People with PRP have reddish, scaly patches that may occur everywhere on the body, or only on certain areas. Some people with PRP also develop thickened skin on the underside of the hands and feet (palmoplantar keratoderma), various nail abnormalities, and/or thinning of the hair. There are several types of PRP classified by age when symptoms begin, body areas involved, and whether other conditions are present. This condition occurs in adults (adult onset PRP) as well as children (juvenile onset PRP). GARD:0007401 https://rarediseases.info.nih.gov/diseases/7401/pityriasis-rubra-pilaris SCTID:3755001 DOID:9212 MEDGEN:45939 icd11.foundation:2048594962 ICD9:696.4