Regularly told migraine affected face: it’s connected with facial muscles (10,5)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Anagram of ( … affected ) [ 1st and 3rd letters of ( Regularly ) “ told ” + MIGRAINE ] + NERVE(boldness or, informally, face). Defn: One of a pair of nerves that stimulate the facial muscles that result in biting and chewing. The clue is missing an apostrophe?