[Oral discoid lupus erythematosus. Diagnostic considerations apropos of a case].

The study and presentation of a typical case of discoid lupus erythematosus with oral lesions in a 30-years old woman, without visceral manifestations at present, was the motive for a revision and updating of the concepts of etiology, differential diagnosis, treatment and prognosis of this disease. The authors emphasize the importance of the clinical and evolving aspect of the lesions, long-term development, as well as the response to treatment (an antimalarial synthesis, applied systematically and infiltrates with betamethasone solution) in order to reach valid diagnostic conclusions. It is important in the anatomopathological study to include the atrophic zones of the central portion of the discoid lesion.