Short-term symptoms of frequent calf cramps, the common causes are as follows: 1, calf acute injury and chronic strain. Due to the existence of injury and strain, local muscle congestion, edema, inflammation, which stimulates muscle dysfunction, leading to the emergence of cramps. 2, can be seen in the patient’s calcium deficiency, potassium deficiency, due to ionic disorders, which can lead to abnormal muscle function, but also to the emergence of frequent symptoms of cramps. 3, can be seen in the local blood circulation is poor, such as cold, varicose veins or vasculitis, and so on, resulting in calf muscle hypoxia, ischemia, which can lead to muscle function. 4, the patient suffers from lumbar disc herniation, spinal stenosis and other lumbar diseases, which will lead to the sciatic nerve root that innervates the local muscles of the calf, the corresponding stimulation and compression, the function of the muscles in the innervated area is disturbed, and the symptom of frequent cramps will also occur.