POMC and Hyponatremia: Laboratory tests showed hypoglycemia (72 mg/dl), hyponatremia, reduced levels of ACTH (5.4 pg/ml; normal range 7.2–63.3 pg/ml), and cortisol (3.5 μg/l; normal range 23–194 μg/l) at 8:00 a.m., TSH (0.18 μUI/ml), and FT4 (0.6 ng/dl).