best diabetic doctors in yelahanka Some of the signs and symptoms of type 1 diabetes and type 2 diabetes are Increased thirst Frequent urination Extreme hunger Unexplained weight loss Presence of ketones in the urine (ketones are a byproduct of the breakdown of muscle and fat that happens when there's not enough available insulin) Fatigue Irritability Blurred vision Slow-healing sores Frequent infections, such as gums or skin infections and vaginal infections