Hereditary mucoepithelial dysplasia: report of two sporadic cases.

Hereditary mucoepithelial dysplasia (HMD) is a rare genodermatosis characterized by nonscarring alopecia, fiery red gums, perineal erythema, and visual impairment. Histologically, dyskeratotic keratinocytes and a small number of desmosomes are the hallmark of the disease. We report on two unrelated patients who presented with typical clinical and histologic features of HMD along with other unreported clinical findings.