lichen myxedematosus atypical lichen myxedematosus https://www.malacards.org/card/atypical_lichen_myxedematosus Intermediate lichen myxedematosus SCTID:725148000 Atypical lichen myxedematosus is an intermediate form of lichen myxedematosus (LM) (a form of mucin dermal deposit) which does not meet the criteria for either scleromyxedema or the localized form. Three clinical subtypes have been described and include scleromyxedema without monoclonal gammopathy; localized forms with monoclonal gammopathy and/or systemic symptoms; localized forms with mixed features of the 5 subtypes of localized LM (discrete form, acral persistent papular mucinosis, self-healing papular mucinosis, papular mucinosis of infancy, and a pure nodular form). The course of atypical LM is unpredictable because only a few cases have been reported. MEDGEN:1383234 GARD:0019066 MONDO:0019447 Orphanet:86797 UMLS:C4510874