Increased blood pressure for no apparent reason may be caused by physiological factors, but also do not rule out primary hypertension, primary aldosteronism, pheochromocytoma and other pathologic factors. 1. Physiological factors: exercise and mental stress may cause blood pressure to rise. 2. Primary hypertension: it can be caused by genetic and environmental factors, and can occur without the use of antihypertensive drugs. Drug treatment is needed, commonly used drugs are diuretics such as hydrochlorothiazide, β-receptor antagonists such as bisoprolol, metoprolol, calcium channel blockers such as nifedipine, angiotensin-converting enzyme inhibitors such as enalapril, and angiotensin Ⅱ receptor antagonists such as chloretin and valsartan. 3. Primary aldosteronism: mainly due to various causes of adrenal cortical hyperplasia, or tumor secretion of excessive aldosterone and caused by increased blood pressure, clinical symptoms such as hypokalemia, you can follow the doctor’s advice to choose spironolactone and surgical resection for treatment. 4. Pheochromocytoma: It is mainly due to intermittent or continuous release of excessive adrenaline, norepinephrine and dopamine from the tumor, which causes vasoconstriction and elevation of blood pressure, and may be accompanied by headache, sweating, tachycardia and other discomforts. You can follow the doctor’s instructions to choose metoprolol and other antihypertensive drugs for treatment, if necessary, surgical resection treatment. 5. White coat hypertension, in the clinic or the doctor to measure blood pressure several times when the average blood pressure is greater than normal. It is common in people who are anxious, nervous and easily influenced by the environment. Self-measurement of blood pressure at home is normal and there is no typical manifestation. When the above symptoms appear, it is recommended to consult a doctor in time, under the guidance of the doctor to clarify the cause of the disease and then carry out symptomatic treatment.