The popularity of medical checkups has revealed that many young people also develop hypertension. However, there is a difference between hypertension in young people and hypertension in the elderly. Some young people have hypertension that is secondary, which means that the cause can be found. Common causes such as: thyroid abnormalities, adrenal glands, kidneys, vasculitis leading to arterial narrowing, sleep apnea syndrome, obesity. Thyroid abnormalities: hyperthyroidism is common can occur secondary to hypertension, manifested as tachycardia and increased blood pressure, which can be controlled by controlling thyroid function Adrenal glands: common adrenal abnormalities include primary aldosteronism: manifested as increased blood pressure, combined with intractable hypokalemia. Pheochromocytoma: may present with paroxysmal palpitations, tachycardia, and increased blood pressure. Both can be surgically eradicated or mostly resolved. Kidney: Some can be secondary to increased blood pressure due to congenital abnormal kidney development, such as atrophy of one kidney and polycystic kidney, resulting in abnormal kidney function. Vasculitis: autoimmune vasculitis, which can lead to systemic aortic stenosis, resulting in increased blood pressure in some limbs and decreased blood pressure in some limbs, among other manifestations. Sleep apnea syndrome: because of poor airway, resulting in relative lack of oxygen at night, long-term easy to lead to peripheral vasoconstriction, causing increased blood pressure Obesity: obesity not only directly lead to increased blood lipids, but also easy to combine sleep apnea, abdominal obesity leading to increased blood pressure. For young people, especially hypertensive patients within 40 years of age, if you find increased blood pressure, it is recommended that the hospital cardiology department to consult, part of the cause can be found, through surgery or targeted drugs to achieve a cure or control state.