<unk>  is a separation of the layers of the artery wall supplying oxygen-bearing blood to the head and brain and is the most common cause of stroke in young adults.<unk>  is a blister-like de-lamination between the outer and inner walls of a blood vessel, generally originating with a partial leak in the inner lining.)<unk>  may occur after physical trauma to the neck, such as a blunt injury (e.g. traffic collision), strangulation, but may also happen spontaneously.
Carotid artery dissection
Vertebral artery dissection
Carotid artery stenosis
Cirsoid aneurysm
Arterial tortuosity syndrome
Arterial embolism
Charcot–Bouchard aneurysm
Middle cerebral artery syndrome