title: Does hydroxyethyl starch cause lichen planus? Lichen planus in a long-time routine blood donor never exposed to hydroxyethyl starch.
abstract: A case of lichen planus attributed to exposure to hydroxyethyl starch has been reported previously. In this report, a case of lichen planus in a healthy blood donor never exposed to hydroxyethyl starch is presented, the statistical incidence of lichen planus in healthy leukapheresis donors is approximated, and a description of the Koebner phenomenon, which could falsely lead to incorrect conclusions regarding cause and effect in this disease, is discussed.
mesh_terms: D000328:Adult; D001782:Blood Donors; D006801:Humans; D006895:Hydroxyethyl Starch Derivatives / Q000009:adverse effects*; D007937:Leukapheresis / Q000009:adverse effects; D008010:Lichen Planus / Q000139:chemically induced*; D008297:Male; D013213:Starch / Q000031:analogs & derivatives*; D013997:Time Factors
chemical_list: D006895:Hydroxyethyl Starch Derivatives; D013213:Starch