If the blood pressure suddenly rises, there may be the following possibilities in clinical practice: 1. Do not insist on taking medicine. For patients with confirmed hypertension, because their blood pressure continues to rise, they should take antihypertensive drugs on time every day. If they miss or take less, their blood pressure will suddenly rise. 2. Emotional fluctuations, such as emotional tension, irritability, irritability, and staying up late will affect the blood pressure level. When emotion is excited, it will activate the sympathetic nerve, making the sympathetic nerve excited. After the sympathetic nerve is excited, it will release neurotransmitters to act on the adrenal gland. The adrenal gland releases a variety of catecholamines, including epinephrine, norepinephrine and dopamine. These vasoactive substances will lead to a sudden rise in blood pressure. 3. He has high blood pressure, but he has never been checked and has not been found. He found high blood pressure when he checked or had symptoms of high blood pressure.