Frequent cheek biting is not a precursor of stroke. Frequent cheek biting indicates that the patient may have malocclusion of teeth, and if a neurological disorder is considered, peripheral facial paralysis may also occur. Peripheral facial paralysis is often seen in idiopathic facial neuritis, in which the patient experiences facial nerve paralysis on one side of the face, resulting in shallow forehead lines, incomplete closure of the eye fissures, shallow nasolabial folds, crooked corners of the mouth when displaying the teeth, and the tendency for food to remain between the buccal mucous membranes of the mouth and the teeth when chewing and swallowing. Because of the impaired movement of the muscles of the face, sometimes the muscles of the cheeks are bitten, commonly known as cheek biting, and this condition can be seen in the neurology or rehabilitation department. If it is in the acute stage, it is treated with hormones in the Neurology Department, and in the recovery stage, rehabilitation therapies such as electroacupuncture, physiotherapy, and infrared rays are performed in the Rehabilitation Department to promote functional recovery.