<unk>  is one of the two types of<unk>  of the arteries in the neck. The other type, carotid artery<unk> , involves the carotid arteries.<unk>  is further classified as being either traumatic (caused by mechanical trauma to the neck) or spontaneous, and it may also be classified by the part of the artery involved: extracranial (the part outside the skull) and intracranial (the part inside the skull).
Vertebral artery dissection
Cervical artery dissection
Carotid artery dissection
Posterior cerebral artery syndrome
Middle cerebral artery syndrome
Anterior cerebral artery syndrome
ROSAH syndrome
Pseudosubarachnoid hemorrhage