I think there's something in the contract for men that equates to not using what medical resources are available to you, much like not using maps when lost. But really, ol' Merck & the 'Net told me all the doctors would tell us anyway - watch out for uncontrollable vomiting, pupils being different sizes, uncontrollable/inappropriate drowsiness, nose, eyes or ears bleeding, ringing/deafness, short-term memory loss, slurred speech, incoherence, lightheadedness... all those brain-swelling symptoms. Of course, Rob has a lot of those symptoms anyway w/out having a head injury...