RESUMEN
Hypoglycaemia is one of the most commonly encountered acute complications of diabetes. This is caused due to overdosage of insulin or oral hypolgycaemic agents. The signs and symptoms of hypoglycaemia can be divided into those due to autonomic hyperactivity and those resulting from neuroglycopenia. If detected early, hypoglycaemia is reversible and can be prevented. Hypoglycaemia may be misdiagnosed as hyperglycaemia and if not treated promptly may lead to death. The treatment of choice in hypoglycaemia is to give 25-50 ml of 50% glucose solution over 2-3 minutes. Where peripheral veins are collapsed, i.v. glucagon injection is preferable. Adequate education of diabetic patients and their relatives is necessary so that hypoglycaemia can be avoided or treated effectively.