Secondary hypertension

Secondary hypertension
Other names	Inessential hypertension
Specialty	Cardiology, nephrology

Secondary hypertension (or, less commonly, inessential hypertension) is a type of hypertension which has a specific and identifiable underlying primary cause. It is much less common than essential hypertension, affecting only 5-10% of hypertensive patients. It has many different causes including obstructive sleep apnea, kidney disease, endocrine diseases, and tumors. The cause of secondary hypertension varies significantly with age.^[1] It also can be a side effect of many medications.