Structural defects: Defects from the construction of a blood vessel can result in narrowing. Most of these are acquired at beginning, along with the cause is unfamiliar. Not enough blood and oxygen causes upper body agony (exertional angina). Exertional angina commonly subsides when the individual rests. In people with intermittent https://www.sgvascularctr.com/types-of-treatments-for-vascular-diseases/