Jamal H. Essayli

Objective To investigate the knowledge, attitudes, and current practices of adolescent primary care providers regarding the epidemiology, clinical features, and diagnosis of atypical anorexia nervosa (AN) compared to AN. Methods An online survey was sent to the Pediatric and Family Medicine clinicians who provide medical care to adolescents. Statistical analyses compared differences in responses to questions about atypical AN versus AN. Results Relative to AN, participants ( n = 67) were significantly less familiar with atypical AN, less likely to consider a diagnosis of atypical AN, less comfortable identifying atypical AN, less likely to counsel patients with atypical AN on health risks, less likely to refer patients with atypical AN to a specialist, and less likely to correctly identify atypical AN. Clinicians with more years in medical practice reported a significantly larger gap in familiarity between AN and atypical AN than clinicians with less than 5 years of practice. Conclusions Providers who care for adolescents appear to be less familiar with and less likely to identify atypical AN compared to AN. This knowledge gap may be more pronounced among clinicians with more years practicing medicine due to the novelty of atypical AN as a diagnosis. Lack of knowledge surrounding atypical AN risk factors may result in delayed diagnosis and associated poor health outcomes. Future research should investigate strategies that improve knowledge and screening of atypical AN in medical and other settings. Public Significance Pediatric and Family Medicine clinicians are less familiar with atypical anorexia nervosa (AN) and less likely to diagnose a patient with atypical AN relative to AN. Insufficient knowledge about atypical AN may place these individuals at increased risk for worsening restrictive eating and the physical and psychological consequences of malnutrition.

Objective Little is known about how individuals with atypical anorexia nervosa (AN) respond to eating disorder (ED) treatment in a partial hospitalization program (PHP), nor how certain factors such as trauma, childhood abuse, psychiatric comorbidity, and suicidal thoughts and behaviors might contribute to poor treatment outcomes. Thus, the current study (1) compares prevalence of these factors between individuals with AN and atypical AN upon admission to an ED PHP, (2) compares PHP treatment response between groups, and (3) investigates whether experiencing these factors impacts treatment outcomes. Method We conducted a retrospective chart review of young adults admitted to a PHP with AN ( n = 95) and atypical AN ( n = 59). Histories of psychiatric comorbidities and adverse childhood experiences were obtained from initial psychiatric evaluations. ED symptoms were assessed at intake and discharge with the Eating Disorder Examination‐Questionnaire (EDE‐Q). Results No significant differences were found at intake in ED symptom severity or prevalence of lifetime trauma, childhood abuse, number of psychiatric diagnoses, or suicidal thoughts and behavior. Symptomatology at discharge also did not differ between groups. Emotional abuse was significantly related to discharge shape and weight overvaluation. No other intake characteristics were significantly related to discharge symptomatology. Discussion To our knowledge, this is the first study to compare the prevalence of comorbidities for both AN and atypical AN, as well as differential treatment outcomes for these individuals in a PHP. Results add to growing literature suggesting that, other than weight, AN and atypical AN have few properties that reliably distinguish them from one another. Public Significance This study adds to a growing body of literature that raises questions about whether anorexia nervosa (AN) and atypical AN are truly different diagnoses. Our findings suggest these two groups present to treatment in a partial hospitalization program (PHP) with similar ED symptoms, as well as prevalence of lifetime trauma, childhood abuse, suicidal thoughts and behavior, and number of psychiatric comorbidities, and demonstrate similar treatment trajectories in PHP.