lichen myxedematosus lichen myxedematosus lichen myxedematosus is a group of cutaneous disorders considered mucinoses.: 183 conditions included in this group are:: 183 generalized lichen myxedematosus localized lichen myxedematosus discrete papular lichen myxedematosus acral persistent papular mucinosis self-healing papular mucinosis self-healing juvenile cutaneous mucinosis papular mucinosis of infancy atypical lichen myxedematosus atypical tuberous myxedema lichen myxedematosusspecialtydermatology