Muscle cramps
Usually, cramps are not harmful or a sign of severe problem, but may also be a symptom of a medical conditions such as angina. It is caused by a painful spasm of the muscle. To relax and contract, the muscle depends partly on different minerals and other chemicals. When angina occurs, it disturbs the body’s balance of these minerals and makes the muscle susceptible to cramps.
Cramps may occur if the blood supply is inadequate, a common consequence of heart disease. Muscle cramps can keep the patient awake in the middle of the night or cause sudden difficulty to walk or perform certain types of physical activity. In cases of angina, any muscle can be affected, but one of the major areas includes the calf and foot muscles. Cramps may last up to 3- 15 minutes and generally improves by themselves. Muscle cramps can also occur in the abdominal wall, hands, and arms.