vitiligo trichrome vitiligo https://github.com/monarch-initiative/mondo/issues/8542 MEDGEN:697977 UMLS:C1274649 SCTID:403270009 Any form of vitiligo characterized by a tan zone of varying width between normal and depigmented skin. This intermediate tan zone has more inflammatory cells, Langerhans cells, and melanophages than vitiliginous or normal skin. The number of melanocytes is greater than in vitiliginous skin but fewer than in normal skin. MONDO:1010122