Hello, Have Diabetes , type 1. Have had varicose vein pronlems before. Wear compression socks(extra firm compression, 30-40mmHg, knee high), orthapedic shoes( not working) and Crow Walker boots(working)(Barber). On my inner knee, I developed bliisters(little orangy fluid). Some even develope when I sleep. Only on right leg, which is swollen in the calf area. Thanks, Bill