That's an interesting idea... the party's elf fighter makes extensive use of Combat Expertise & Improved C.E. to really ratchet up his AC to near unhittable in melee levels (+17 at level 17). If his INT was dropped even 1 point to 12, those feats would be useless to him until he was cured. (And, before you say "touch of idiocy" - he is a C/G paladin of freedom, which makes him immune to mind-affecting compulsions like Touch of Idiocy)
So, he's a Fighter/Paladin, or do you just call him fighter because he's a frontliner?