Diabetic ketoacidosis (DKA) is an extremely serious complication of type 1 diabetes that can lead to coma or even death if left untreated. About 1 of every 3 young people diagnosed with diabetes have DKA when they are diagnosed. Symptoms of DKA include dehydration, nausea and blurred vision. No one should have to lose their life from undiagnosed diabetes. See your doctor if you have symptoms.