I am Male, 47, 350 pounds, arthritis in my hips. I developed what looked like a water-blister on the inside of my leg just above the ankle bone while I was sleeping. The blister was about two inches across, round and red in color. I broke the blister open and pushed the fluid out; it was clear and sticky. Since then; the scab has flaked off leaving a purple area of tight stiff skin, about two inches across. The area becomes itchy from time to time but no pain. It has been over a year and the area remains; and unchanged.