There has got to be more to Warren's head injuries than have been reported. It just doesn't make sense for a pro-athlete to be missing so much time because of headaches unless we're talking football or hockey where there is real contact. Basketball for the most part is not a contact sport. There hasn't been anything said about concussions that I'm aware of but he missed over 2 weeks last year, was hospitalized and didn't look right for about 3 weeks after his return and now going through head issues again this year. i hope it's nothing serious but I can't think of anything that it could be that wouldn't be serious.