Myofascial tremors are spontaneous discharges of muscle fiber bundles triggered by lower motor neuron lesions or nonpathological factors, resulting in localized muscle contractions, mainly in the form of localized skin depressions or rippling jerks. The frequency of episodes of fasciculations ranges from 2 per second to once every few seconds, and sometimes a sustained, rapid fascicular tremor, known as polyfibrillar myoclonus, can occur. Rarely, this symptom is characterized by localized skin depressions or rippling jerks that are small enough not to drive joints, and it is often not accompanied by other symptoms, such as pain. Fasciculations can be caused by non-pathological factors such as tension, anxiety, and overexertion, and can usually be relieved on their own. It can also be caused by motor neuron disease, multiple sclerosis, or other diseases such as severe anemia, electrolyte disorders, etc. Patients may also be accompanied by other symptoms such as limb weakness, motor disorders, sensory abnormalities, etc. It is recommended to consult a doctor in time.