The main manifestations of muscle spasm are as follows: 1, is the local pain, this symptom performance is the most common, once the muscle spasm occurs, the initial performance is often a continuous pain. This pain is often characterized by twitch-like pain, which is continuously aggravated by pulsating pain. 2, there may be localized swelling, which is mainly manifested by localized spasmodic striae in the initial stage, and surrounding inflammatory edema. In the recurrent muscle spasms, only the spastic muscle strips are often palpable. 3, there is a restriction of movement, mainly because the patient is afraid to move due to pain, while in some cases, the muscle spasms are too severe, resulting in the limb fixed in a certain part, not able to move, the body tension is relatively high. 4, there may be some abnormal activities, in the process of muscle twitching The patient may do involuntary activities, such as will involuntarily flex or straighten the limb.