Discrete Papular Form of Lichen Myxedematosus: A Case Report and Review of the Literature
The discrete papular form of lichen myxedematosus (LM) is a rare idiopathic skin disorder. We present a case of this type in an 80-year-old African American woman. She was treated with pimecrolimus cream, which resulted in symptomatic relief. To our knowledge, this is the first report of the discrete papular form of LM occurring in an African American, as well as the first report on the disorder's response to pimecrolimus therapy. We also review the English medical literature on this rare disease and examine and summarize the findings.
DPLM is a rare variant of localized LM. DPLM can be diagnosed by a thorough history and physical examination; histologic proof of dermal mucin deposits; and ruling out other diseases with laboratory tests for serum protein, thyroid function, and, if the patient is at risk of diabetes mellitus, blood glucose levels. DPLM is a self-limited skin disease, and prognosis is generally good, but it typically persists long-term and may slowly progress. Treatment is usually unnecessary, but it may be recommended if the lesions are symptomatic or cause cosmetic issues. Unfortunately, few treatment plans have been shown to successfully treat DPLM.
