Other investigations were normal, including chest x-ray, cerebrosp.nal fluid, tests of thyroid function, intravenous pyelogram, urinary keto-, and hydroxysteroids, urinary aldosterone and plasma cortisol levels. Urine electrolyte excretion was at all times within normal limits. There was no myoglobinuria, but this test was not done until two weeks after admission to hospital. Muscle biopsy (lef...