Renovascular hypertension can be defined as high blood pressure caused by renal artery diseases mainly due to the narrowing of the renal artery. Renal artery diseases, such as renal artery stenosis, result in reduced blood flow due to the narrowing of the artery that provides blood to the kidney. When the kidney receives low blood flow, it responds by releasing hormones that stimulate the body to retain sodium and water as the blood pressure goes up. Major causes of renovascular hypertension are renal artery stenosis, atherosclerosis and fibromuscular dysplasia. Renovascular hypertension is hard to diagnose and generally has no signs or symptoms. Renal hypertension can cause chronic kidney disease. At the beginning of renovascular hypertension treatment, medications are given to control high blood pressure. Antihypertensive drug therapy is given for renovascular hypertension treatment. Blood pressure regulator medication, such as angiotensin-converting enzyme (ACE) inhibitors, angiotensin II receptor blockers and diuretic drugs, are the primary drugs used for renovascular hypertension treatment. Sometimes, calcium channel blocker, beta blockers and other blood pressure medications are also prescribed for renovascular hypertension treatment if required. Angiotensin-Converting Enzyme (ACE) inhibitors given for renovascular hypertension treatment interrupt the conversion of angiotensin I and angiotensin II. Benazepril, captopril, lisinopril, ramipril, enalapril and captopril are the common ACE inhibitors used for renovascular hypertension treatment. Common angiotensin II receptor blockers for renovascular hypertension treatment include candesartan, losartan, valsartan and olmesartan.