From http://www.savannahvascular.com/home.cfm/page/Articles/article/18/:
Quote:
There are many causes of leg pain ranging from arthritis to bulging discs in your lower spine to blockages in the arteries of your legs (peripheral arterial disease or P.A.D.). Other causes include neuropathy, fibromyalgia, venous insufficiency or swelling and an assortment of muscular-skeletal conditions (ailments affecting muscles, joints, bones, tendons etc.). While all of these conditions can cause significant discomfort, a diagnosis of peripheral arterial disease has the greatest implications for your health. A good understanding of when leg pain is caused by P.A.D. is very important not only because this will affect treatment options but also because P.A.D is associated with significantly increased risks of heart attack, stroke and death.
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WHAT ARE THE SYMPTOMS OF P.A.D. AS OPPOSED TO THE MANY OTHER CAUSES OF LEG PAIN?
This distinction is very important since most leg pain is not caused by circulation problems. Night cramps and leg pain while you are sitting, lying or standing is rarely caused by P.A.D. Pain in your joints, feet or back while walking is most frequently related to one of many muscular-skeletal disorders.
Symptoms of P.A.D. are usually very specific. The most common signs include calf or thigh or buttock muscle pain that occurs while walking (not night cramps) and is relieved with only a couple minutes of rest. This is called claudication and occurs when blockages prevent the additional flow of blood and oxygen needed by the muscles for the extra work of walking.