(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
... migraine treatment can constrict blood vessels, and some drugs 
that dilate ... We also know that people with migraine can be more sensitive to... [DOC] [TLE] Etymologie, Etimologa, tymologie, Etimologia, Etymology - IE ... [PAR] Their "limericks," moreover, were so far as I can tell in Irish and not English.