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An intermediate form of lichen myxedematosus (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 lichen myxedematosus (discrete form, acral persistent papular mucinosis, self-healing papular mucinosis, papular mucinosis of infancy, and a pure nodular form). The course of atypical lichen myxedematosus is unpredictable because only a few cases have been reported.
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An intermediate form of lichen myxoedematosus (a form of mucin dermal deposit) which does not meet the criteria for either scleromyxoedema or the localised form. Three clinical subtypes have been described and include scleromyxoedema without monoclonal gammopathy; localised forms with monoclonal gammopathy and/or systemic symptoms; localised forms with mixed features of the 5 subtypes of localised lichen myxoedematosus (discrete form, acral persistent papular mucinosis, self-healing papular mucinosis, papular mucinosis of infancy, and a pure nodular form). The course of atypical lichen myxoedematosus is unpredictable because only a few cases have been reported.
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