The causes of foot cramps include catching a cold, lack of calcium, exertion, excessive exercise, and narrowing of blood vessels, which need to be treated with medication, physical therapy, or surgery. 1. Catching a cold: Catching a cold can cause muscle spasms in the calf, resulting in cramps, which can be relieved by applying a hot towel to keep the calf warm. 2. Calcium deficiency: Calcium deficiency can also cause foot cramps, which mostly occur at night and frequently, and can be alleviated by calcium and vitamin D supplementation. 3. Exhaustion: When walking or exercising with too much intensity can cause muscle fatigue and cramps, which can be alleviated by resting, soaking feet in warm water and massaging. 4. Excessive exercise: muscle fatigue caused by running or strenuous exercise leads to leg cramps. 5. Vascular stenosis: Insufficient blood supply due to narrowing of blood vessels in the lower limbs can also lead to leg cramps. When the symptoms are mild, you can choose medications for the primary cause under the guidance of your doctor to alleviate the symptoms, e.g., antiplatelet drugs such as aspirin and lipid regulating drugs such as Rosuvastatin calcium tablets can be chosen for the stenosis caused by atherosclerosis. You can also consider stenting after consulting your doctor. So the causes of foot cramps are mainly due to the above reasons, to be treated for the cause.