Melkersson-Rosenthal syndrome: A case report.

Key Clinical Message: Melkersson-Rosenthal syndrome (MRS) remains an enigmatic pathology due to an unknown etiology. Our report, of a 69-year-old man with MRS misdiagnosed for about 40 years, underlines the diagnostic difficulty of this condition. A holistic view of the patient, with a correct medical history investigation, are often decisive in the diagnosis of MRS. Abstract: Melkersson-Rosenthal syndrome (MRS) is a rare disorder with a still unknown etiology. It is defined by three main symptoms, which are orofacial granulomatosis (OFG), facial palsy, and fissured tongue. It generally presents in young people, during the second or third decade, and its incidence in the entire population is about 1%. We focus our attention on a 69-year-old man who came to us with an important swelling of the upper lip. His anamnesis revealed that he suffered from a facial palsy four times in his life and at the physical examination we attested the presence of scrotal tongue. We suspected a misdiagnosed MRS and we searched the web in order to give him a diagnosis and a therapy. We found that OFG is the most common symptom of MRS and that it can show as a non complete form, where the three main symptoms cannot occur simultaneously. We also prescribed a therapy based on the use of topic steroids and antiviral, according to literature. After the positive response to the therapy and according to data found in the most recent literature, we can assume that our patient suffers from a misdiagnosed MRS for about 40 years.