The Melkersson-Rosenthal syndrome (MRS) is a rare condition characterized by the 
triad of familial relapsing peripheral facial palsy, facial edema, and lingua 
plicata. Within a well-documented family aggregate of MRS, an index case 
simultaneously demonstrated all the elements of the triad, as well as gingival 
changes similar to those of cheilitis granulomatosa. When the incomplete or 
oligosymptomatic forms are considered, the MRS may be more common than 
previously thought.