How Do Doctors Diagnose Bulimia Nervosa (BN)?

Doctors can diagnose BN with the following tests:

  • Checking for signs of the binge-purge cycle (such as cavities in the teeth, changes in growth or unusual injuries from exercise)
  • Physical exam
  • Blood tests and electrolyte tests to check for electrolyte (salt) imbalances caused by purging behaviors
  • Interview with a mental health provider about eating habits and body image
  • Answering questions about your child's eating habits and behaviors

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