[Dermatopathic lymphadenopathy caused by amalgam allergy. A case report].

A case of a dermatopathic lymphadenopathia is introduced where by we show that this disease can be released without a dermatosis, but only by a disease of the mucous membrane of the mouth. The macroscopic alterations can be very small as described in our case although there is a distinct sensitisation to mercury as allergen.