facial nerve disorder cheilitis syndromic disease urticaria Melkersson-Rosenthal syndrome https://github.com/monarch-initiative/mondo/issues/9097 https://rarediseases.info.nih.gov/diseases/7010/melkersson-rosenthal-syndrome https://www.malacards.org/card/melkersson_rosenthal_syndrome Melkersson's syndrome MedDRA:10027166 MEDGEN:6291 OMIM:155900 GARD:0007010 MRS Melkersson-Rosenthal syndrome Orphanet:2483 DOID:1761 ICD10CM:G51.2 MONDO:0007969 UMLS:C0025235 cheilitis Granulomatosa MESH:D008556 NORD:1429 NCIT:C84886 EFO:1001039 The Melkersson-Rosenthal syndrome is a rare disorder characterized by a triad of recurrent orofacial swelling, relapsing facial paralysis and fissured tongue and onset in childhood or early adolescence. It has an estimated incidence of 8/10,000. The etiology is unknown but hereditary predisposition is suspected.