Clenching of the teeth is not a sign of death; it can be seen during seizures, in the presence of tetanus symptoms, and in various causes of dystonia, such as Meige syndrome. In generalized tonic clonic seizures, the limbs may become tonic, and the convulsions may lead to clenching of the teeth, tongue biting, urinary incontinence, etc. The patient may suffer from impaired consciousness, which requires head CT, MRI, and EEG to confirm the diagnosis, and antiepileptic treatment to improve the condition. Tetanus is an anaerobic bacterial infection that occurs after a small, narrow wound and after an incubation period with typical symptoms, such as a bitter grimace, clenched teeth, corns, and convulsions, which can be relieved by administering antitoxin injections for tetanus. Still due to dystonia such as Meige syndrome, etc., there can be a disorder of opening and closing the mouth, and the patient may have symptoms such as clenching the teeth, which requires treatment such as botulinum toxin injections for relief.