Evidence-Based Reviews

Anorexia nervosa and COVID-19

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Clinical considerations

Neither the CDC nor the WHO have issued a specific protocol for monitoring for and treating COVID-19 in patients with eating disorders; however, the guidelines offered by these organizations for the general population should be followed for patients with eating disorders.

When screening a patient with an eating disorder, keep in mind that the symptoms of eating disorders, such as AN, may mimic an infectious process. Mood symptoms, such as depression or anxiety, could represent physiological responses to infection. Patients with GI symptoms that typically are considered part of the pathology of an eating disorder should be more carefully considered for COVID-19. Monitor a patient’s basal body temperature, and be mindful that a patient with AN may exhibit a delayed fever response. Be vigilant for a recent loss of taste or smell, which should raise suspicion for COVID-19. When monitoring vital signs, pay careful attention for any decompensation in a patient’s pulse oximetry. Whenever possible, order COVID-19 testing for any patient you suspect may be infected.

Outpatient clinicians should work closely in a collaborative manner with a patient’s eating disorder treatment team. Psychiatrists, primary care physicians, psychotherapists, nutritionists, and other clinicians should all follow CDC/WHO guidelines regarding COVID-19, provide surveillance, and communicate any suspicions to the medical team. Eating disorder treatment programs, including residential centers, partial hospital programs (PHP), and intensive outpatient programs (IOP), must enhance monitoring for COVID-19, and exercise caution by practicing social distancing and providing adequate personal protective equipment for patients and staff. To reduce the spread of COVID-19, many IOPs and PHPs have transitioned to virtual treatment. Residential centers must carefully screen patients before admission to weigh the risks and benefits of inpatient vs outpatient care.

Bottom Line

Differences in the immune system of patients with an eating disorder do not necessarily confer a higher or lower risk of infection. Symptoms of some infections can mimic the symptoms of anorexia nervosa. Recognizing infections in patients with eating disorders is critical because compared with the general population, they have higher rates of infection-related morbidity and mortality.

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