What condition can weak arterial walls lead to?

Weak arterial walls can lead to the development of aneurysms. An aneurysm is a localized dilation or bulging of an artery caused by a weakness in the arterial wall. When the structural integrity of the arterial wall is compromised, due to factors such as hypertension, genetic disorders, or atherosclerosis itself, the pressure from the blood flow can cause a segment of the artery to weaken and balloon outwards. This bulging can become life-threatening if the aneurysm ruptures.

The other conditions listed are related to different mechanisms or processes involving blood vessels. Atherosclerosis involves the buildup of plaques in the arteries leading to narrowing, thrombosis refers to the formation of a blood clot within a blood vessel, and varicosities pertain to enlarged veins primarily affected by valve incompetence. While all these conditions can be serious, it is the structural weakness of arterial walls that specifically relates to the formation of aneurysms.