Lichen Myxedematosus: Case Report and Review of Literature.

We present the case of a 66-year-old Hispanic male referred by his primary care physician for evaluation of asymptomatic dark spots on his trunk and extremities present for about one-year. Physical exam revealed smooth, brown hyperpigmented papules coalescing into plaques on the trunk. Multiple well-demarcated oval dark brown plaques measuring 3 cm in size were located on the upper back, peri-umbilical area, bilateral lower extremities, and buttocks. A diagnosis of lichen myxedematosus was made based on histologic features observed in the dermis. There are 5 subtypes of LM: a discrete papular form, acral persistent papular mucinosis, self-healing papular mucinosis, papular mucinosis of infancy, and a pure nodular form. Occasional patients with LM have atypical features or features intermediate between scleromyxedema and localized LM. We present a case of atypical LM with mixed features of the different subtypes. Herein we will review the varied clinical presentations of LM and highlight the distinguishing features of scleromyxedema. J Drugs Dermatol. 2020;19(3): 320-322 doi:10.36849/JDD.2020.4864. PMID: 32550685 [PubMed - as supplied by publisher]
Source: Journal of Drugs in Dermatology - Category: Dermatology Tags: J Drugs Dermatol Source Type: research