Which condition is characterized by a lack of blood flow to the lower extremities, more common in men, and can be relieved by rest?

Buerger's disease, also known as thromboangiitis obliterans, is characterized by inflammation and thrombosis of the small and medium-sized blood vessels, primarily affecting the lower extremities. Men are more commonly affected by this condition, particularly those who are heavy smokers. The obstruction of blood flow due to blood vessel constriction leads to symptoms such as pain in the legs and feet, which typically worsens with activity and can be relieved by rest. This relationship between activity and relief is a hallmark of the condition.

In contrast, Raynaud's disease primarily affects the fingers and toes, causing episodic color changes and typically does not relate directly to blood flow issues in the lower extremities to the same extent as Buerger's. Deep vein thrombosis and phlebitis involve larger veins and may not specifically present with the same symptoms of pain relieved by rest, as they can raise the risk of complications like pulmonary embolism.