Rare skin diseases

Source and selection

Prevalence classes: Orphanet, Orphadata products 1 and 9 (version 23 June 2026, CC BY 4.0), matched on 29 October 2026. Shown is the point prevalence (birth prevalence for congenital conditions), preferably validated values for Europe or worldwide; where these are missing, the validated value of one European country – the country is then given. Classes are reformatted. For pages on the skin form of a disease (e.g. cutaneous sarcoidosis), the class of the whole disease applies. Not included are diagnoses for which Orphanet gives no prevalence class or whose page cannot be matched unambiguously to one Orphanet entry – they may still be rare. This list is no substitute for medical advice.