If there is a situation of cramp in the lateral calf, it is mainly due to two reasons. One, in patients with lumbar disc herniation, after the nerve root compression, it will cause numbness and pain in the lateral calf, and after serious pain will present cramp-like symptoms, thus affecting the weight-bearing activities of the calf area. The lateral calf muscles belong to the toe extensor group, so if the regular foot and toe dorsiflexion activities easily lead to repeated force pulling on the lateral calf muscles, causing spasm and edema, thus causing cramping symptoms, and when the lateral calf is pressed, there will be obvious pressure pain.