<unk>  is an inflammatory disease of blood vessels (most commonly large and medium arteries of the head). It is therefore a form of vasculitis. The name comes from the most frequently involved vessel<unk>  artery which branches from the external carotid artery of the neck). The alternative name (giant cell<unk>  reflects the type of inflammatory cell that is involved (as seen on biopsy).
Temporal arteritis
Takayasu's arteritis
Charcot-Bouchard aneurysm
Retinal migraine
Carotid artery dissection
Cavernous sinus thrombosis
Cluster headache
Cerebral vasculitis