What Causes Armpit Pain?

Peripheral Artery Disease

Peripheral artery disease, a circulatory condition, results in the narrowing of the arteries. When the arteries are narrowed, the amount of blood flow also reduces. However, in this condition, blood flow is usually reduced in the arms and legs. Reduced blood flow means both the patients' arms and legs will not be receiving enough blood to keep up with the body's demands. The result is pain upon moving because there is less oxygenated blood reaching the tissues as well as muscles, which requires lots of oxygen to prevent pain. Peripheral artery disease, therefore, often results in armpit pain, as well as pain in other areas.

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