Early symptoms include anorexia, muscular weakness, and fatigue.早期症状有厌食、肌无力和疲劳。The causes of anorexia are much debated.关于厌食的起因存在颇多争论。Early symptoms include anorexia, muscular weakness and fatigue.早期症状有厌食、肌无力和疲劳。Anorexia is a common eating disorder.厌食是一种常见的进食障碍。