(Kelly of the Clue Crew shows a brainy animation on the monitor.)  When cerebral arteries become dilated, it can often lead to this vascular pain also known as cephalalgia
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abcdefg | abcdefghijklmnopqrstuvwxyz | ABC gum | ABC Islands | ABC lead | 
ABC ... aberrant | aberrant artery | aberrant bile ducts | aberrant duct | aberrant 
goiter ..... endocarditis | acute brain syndrome | acute disease | acute dose | acute 
loss of...