If the brain's blood supply is decreased too much, the person may pass out (syncope). Symptoms may worsen when changing position from lying down or sitting, to standing up. In addition to feeling dizzy, associated symptoms may include: 1  Sweating. 2  Weakness. 3  Nausea and vomiting. 4  Shortness of breath. 5  Chest pain.
Although most muscle cramps are harmless, some may be related to an underlying medical condition, such as: 1  Inadequate blood supply. Narrowing of the arteries that deliver blood to your legs (arteriosclerosis of the extremities) can produce cramp-like pain in your legs and feet while you're exercising. 2  Nerve compression.
Common causes of leg pain. Some of the more common causes of leg pain are minor or temporary conditions that your doctor can treat effectively. Cramps. A primary cause of leg pain is a muscle cramp or spasm thatâs often known as âa charley horse.â A cramp usually triggers sudden, sharp pain as the leg muscles contract. The tightening muscles often form a visible, hard lump beneath the skin. There may be some redness and swelling in the surrounding area.