Marfan Syndrome With Recurrent Lower Left Posterior Toothache as the First Symptom: A Report on a Rare Case.

Marfan syndrome (MFS) is a life-threatening connective tissue disorder that affects multiple organs and systems. We report a case of MFS with recurrent lower left posterior toothache as the first symptom. A 23-year-old Asian man walked into the dental emergency room with a chief complaint of recurrent spontaneous and intermittent toothache in his lower left posterior tooth region, mimicking acute symptomatic pulpitis. He self-reported a relatively healthy medical status without any hereditary disease. However, his disproportionately elongated body structure, high myopia, and positive wrist sign were immediately recognizable. Although there were no remarkable findings on the dental examination, pectus carinatum deformity and abnormal blood pressure were later detected. He was immediately referred to a cardiologist in a medical hospital. The timely diagnosis of MFS and early surgical intervention helped to avoid severe lethal consequences. The symptoms of toothache completely resolved after surgery.