Patients with toothache will have high blood pressure, which is a stress reaction. When acute pulpitis strikes, the pulp tissue is congested and swollen, and a large amount of inflammatory secretions are produced, causing a rapid rise in pressure in the pulp cavity, producing severe pain, and the whole body is in a state of stress, and the patient’s emotions are more tense, triggering nerve reflexes and elevated cardiovascular pressure, resulting in blood pressure exceeding the normal range. When toothache continues to attack, it can affect the patient’s sleep and rest, and cannot chew and eat normally, causing the endocrine system of the body to be disturbed and the hormone level to be unstable, resulting in a rapid rise in blood pressure, producing dizziness, nausea and other uncomfortable symptoms. Pulp drainage or extraction of the focal tooth is required. After the pain is relieved, the patient is emotionally stable and the blood pressure can gradually return to normal.