My husband is 55 years old and has Type 2 diabetes. His blood sugar is in a good range, 5-6 mmol/L. He is obese, has had a mild MI in June 2012. He recently developed several "water blisters" on his legs. No trauma, they just appear! They come and go, and generally reabsorb within 2-3 weeks? One became about the size of a grape, others are more pea-sized. Have you ever heard of diabetic water blisters?