Hypothermia-induced Hypokalemia

A 36-year-old man with a history of juvenile pilocytic astrocytoma of the optic pathway diagnosed at age 13 treated with surgical resection followed by chemotherapy and radiation for progression in his mid-20s, with resultant panhypopituitarism, presented to the hospital in early spring with progressive but intermittent muscle aches and weakness of two months’ duration. He denied vomiting or excessive diarrhea. The panhypopituitarism had been well-managed on supplemental hormone therapy.