Anorexia nervosa

• History / PE:
  Amenorrhea
  Below "normal" body weight
• Associated With:
  Osteoporosis
  Elevated cholesterol and carotene levels
  Cardiac arrhytmias
  Sick euthyroid syndrome
  H-P-A dysfunction
  Hyponatremia (from excessive water intake)
• Differential Diagnosis:
  Bulimia nervosa
  Eating disorder, not otherwise specified