Anorexia and eating disorders

Anorexia or anorexia nervosa is a involving distorted thoughts around food, eating or body weight combined with reducing food intake and/or other behaviors that lead to sufferer being significantly underweight. Other eating disorders include bulimia or bulimia nervosa, which involves intentional vomiting or purging food to avoid weight gain; binge eating disorder, and orthorexia (eating an extremely restricted diet based on fear of eating "unhealthy" foods; and eating disorder not otherwise specified (EDNOS)

Anorexia and ME/CFS
Severe myalgic encephalomyelitis/chronic fatigue syndrome can cause swallowing difficulties, vomiting and food intolerances, leading to the sufferer becoming severely unweight; this can cause a misdiagnosis of anorexia or another eating disorder.

Some people severely affected by ME/CFS need feeding tubes, or artificial nutritional. This is also the case for some people with anorexia or eating disorders.

Children and refusal to eat
Some parents have reported that their child’s swallowing difficulties or vomiting have resulted in medical professionals interpreting these ME/CFS as an indicator of a mental disorder, for example some children originally diagnosed with chronic fatigue syndrome have had their diagnosis changed to Pervasive Refusal Syndrome because they were judged as "refusing" to eat, wash, or increase their activity levels.

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 * Wikipedia