Abstract

A 24-year-old black woman attended the dental clinic with complaints of dentin sensitivity. Extraoral physical examination revealed a diffuse cutaneous rash, of 15 days' evolution, on the face, of widespread distribution, and with hypo- and hyperpigmented skin plaques, desquamative surface, and pruritus. Oroscopy analysis revealed asymptomatic erythematous mucous plaques on a grayish background, bilaterally in the soft palate and lower labial mucosa. The diagnostic hypothesis was secondary syphilis. The patient reported of a mouth ulcer that had healed more than 1 year prior. Venereal Disease Research Laboratory (VDRL) and serology tests for HIV were requested; the patient was referred to the infectology service. High titers (positivity) on the VDRL confirmed the diagnosis, negating the need for a biopsy. Treatment consisted of 3 doses of penicillin. After the first dose, the mucosal plaques disappeared, and the cutaneous rash improved, with complete resolution at treatment end. The patient continued the dental treatment, no signs of recurrence were observed.

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