There are two kinds of hypertension:, Primary hypertension is the most common. It develops gradually with no discernible cause, but it may be linked to genetics, physical changes in the body, or high body weight., Secondary hypertension comes on quickly and can be more serious. It has a number of causes, including kidney disease, congenital heart defects, thyroid issues, alcohol consumption, and certain medications and stimulants, like cocaine and amphetamines., , ,