A Case of Hypoglycemia Associated With Anorexia Nervosa Revealing Isolated Adrenocorticotropic Hormone (ACTH) Deficiency

Anorexia nervosa (AN) typically affects young women and leads to severe emaciation, while isolated adrenocorticotropic hormone (ACTH) deficiency (IAD) usually occurs in middle-aged and older adults, causing secondary adrenal insufficiency, appetite loss, and weight loss. Although differentiating between these conditions can be challenging, their coexistence is rare. We encountered a patient with AN hospitalized for impaired consciousness due to hypoglycemia, who was later diagnosed with IAD. It is important to consider IAD as a differential diagnosis when hypoglycemia occurs in patients with AN.