[20 kg weight loss - that can also be dangerous without underweight].
.
Mut
D000293:Adolescent; D000856:Anorexia Nervosa / Q000175:diagnosis*; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D012307:Risk Factors; D013851:Thinness / Q000209:etiology*; D015431:Weight Loss