DefinitionThis section has been translated automatically.
In rapidly proliferating skin tumors, traumas and autoimmune dermatoses, e.g. at the nail wall and eponychium, thrombosed capillary sequesters with constricted distal papillary vessel loops, which usually recede with the horny layer. The stumps of the vessels usually cause secondary bleeding (micropurpura localisata).
Prof. Dr. med. Peter Altmeyer