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.
Treating leg cramps. If the cause of your leg cramps is known, it may be possible to treat the underlying cause. For example, secondary leg cramps that are related to liver disease are caused by high levels of toxins in the blood which trigger muscles spasms.xercises during cramps. During an episode of leg cramp, stretch and massage the affected muscle. For example, if the cramp is in your calf muscle: 1  Straighten your leg and lift your foot upwards, bending it at the ankle so that your toes point towards your shin.