erythrokeratodermia variabilis

== English == === Etymology === Coined by Dutch physician Samuel Mendes da Costa; erythrokeratodermia (a class of diseases) +‎ Latin variabilis (“variable”), from erythro- +‎ kerato- +‎ -derma +‎ -ia. === Noun === erythrokeratodermia variabilis (uncountable) A rare genetic skin disorder characterized by hyperkeratosis, lesions, or dark markings on the skin; Mendes da Costa syndrome.