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Melkersson-Rosenthal syndrome (MRS) is a rare, inherited syndrome that affects the nervous system and skin (a neurocutaneous syndrome). MRS may be characterized by three main features: recurrent facial nerve palsy, episodes of swelling of the face and lips, and fissuring of the tongue (formation of deep grooves). The majority of people with MRS only have one or two of these features, rather than all three. The age when symptoms begin and frequency of episodes varies from person to person (even within the same family), but usually symptoms begin during childhood or early adolescence. Recurrent episodes may lead to worsening and persistent swelling, which may become permanent. MRS is more common in females than in males.
Inheritance of MRS is autosomal dominant, but a consistent genetic cause has not been found. It is possible that more than one gene is responsible for MRS, and/or that environmental "triggers" may contribute to causing the syndrome in some genetically predisposed individuals. In some cases, MRS may be associated with Crohn's disease or sarcoidosis. MRS is diagnosed based on the symptoms present and medical history, and a biopsy of the lips may be needed to confirm the diagnosis in some cases.
Treatment for MRS aims to relieve symptoms, but the effectiveness of current treatment options has not been well-established. Treatment options may include medications to reduce swelling (such as nonsteroidal anti-inflammatory drugs and corticosteroids), antibiotics, immunosuppressants, surgery (to relieve pressure on the facial nerves and reduce swelling), and facial rehabilitation (which may involve physiotherapy and speech-language therapy).
Source: GARD Last updated on 05-01-20
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