Postgraduate Medical Journal 1999;75:291-2
A Bhattacharyya, PG Wiles
We report two patients with type 1 diabetes mellitus, previously well controlled with good compliance, presenting with unexplained diabetic ketoacidosis. Following initial correction of the metabolic disorder, persisting tachycardia lead to the diagnosis of thyrotoxicosis. In both cases, treatment propranolol and carbimazole helped in the stabilization of their metabolic states. Although thyrotoxicosis is known to destabilize diabetes control, we can find no reports of it precipitating diabetic ketoacidosis.