Sores develop that are very resistant to healing.
Gangrene can set in, and, at that point, amputation of the toes, feet or a portion of the leg may become the only life-saving procedure available. The cramping is so severe, it's hard to walk across the living room floor. Enjoying golf, tennis, fishing or even a walk through the mall is almost impossible. Now the pain comes even when sitting, watching television or lying down. It was so cramped that I could not walk on it.