what causes prehypertension?
 Atherosclerosis, which is the buildup of fatty deposits in your arteries, can lead to high blood pressure. Sometimes an underlying condition causes blood pressure to rise.Possible conditions that can lead to prehypertension or high blood pressure include: 1 Atherosclerosis. 2 Obstructive sleep apnea.3 Kidney disease. 4 Adrenal disease. 