The co-existence of vulvar lichen sclerosus, ulcerated calcinosis cutis, and dermatomyositis: coincidence or immunological mechanism?

Calcinosis cutis is a condition characterized by the deposition of calcium salts in the skin and subcutaneous tissues, and patients suffering from it encounter various connective tissue disorders, such as dermatomyositis (DM), scleroderma, and systemic lupus erythematosus. Although calcinosis cutis is frequently accompanied by juvenile dermatomyositis, rare cases have been reported in adult patients with DM. On the other hand, lichen sclerosus (LS) is a chronic inflammatory disease of the skin and mucosal surfaces. In the present report, we present a rare case of a 71-year-old patient with DM accompanied by ulcerated calcinosis cutis and vulvar LS.