A young adult who complained of extreme dentin sensitivity to tactile and thermal stimuli exhibited severe, generalized tooth erosion and an associated parafunctional habit. The diagnosis of the underlying general disease and treatment of its dental sequelae are presented, together with a 2-year follow up. Patients who are suspected of having gastroesophageal reflux should be referred to a gastroenterologist or other health professionals to ensure early diagnosis and treatment of the underlying disorder, thus minimizing the destruction of the patient's dentition and improving the patient's general health. Dental treatment should be adjusted to fit the characteristics of each case.