RDH UOR 2013 Eating disorders are potentially life threatening and have not lost their relatively poor prognosis in the last decades. Whereas the increase in incidence and prevalence rates of anorexia nervosa over time are questionable, an increasing trend in incidence and prevalence of bulimia nervosa has been reported. Dental hygienists and dentists are often involved in treating teeth of patients with both anorexia nervosa and bulimia nervosa because the teeth of these patients are regularly affected by erosion and caries. Without identification of the underlying evidence of psychological problems and consequent treatment, a patient’s medical and dental health will deteriorate as the eating disorder progresses. This course will review specific signs and characteristics to alert the clinician to these potentially fatal disorders for assessment, oral treatment, and medical referral.