skin disorder lichen disease https://www.malacards.org/card/lichen_disease MEDGEN:507920 UMLS:C0023643 ICD9:697 A long-term skin condition that mainly affects the skin of the genitals. It usually causes itching and white patches to appear on the affected skin. DOID:8574 SCTID:88996004 ICD9:697.8 lichen condition lichen MONDO:0006570 EFO:1000724 ICD9:697.9