Whether it is roundworm disease or pinworm disease, as long as there is an intestinal infection, the symptoms of teeth grinding can occur. 1. Ascariasis: the specific clinical manifestations are related to the number of roundworms and the parasitic site, after the intestinal infection, some patients with mild disease do not have any symptoms. Most of the patients with a large number of roundworm infections may have abnormal appetite, heterophagia, irritability, teeth grinding, malnutrition and other symptoms. 2. Pinworm disease: its clinical manifestations and the site of infection also has a direct relationship, once the intestinal tract infection, you can show anal and perineal itching, waking up at night, lack of appetite, abdominal pain, teeth grinding and other manifestations. Both diseases can trigger the symptoms of teeth grinding, which cannot be diagnosed by this symptom. It is recommended that patients seek medical examination as soon as possible to clarify the cause of the disease and under the guidance of the doctor for treatment.