First sending hugs!!! The way that my GI explained it to me is this,well,something like this,the Remicade is made of mouse protein,and Humira isn't,so the chance for such a bad reaction is minimum,however,you can get the localized reactions,rash,redness... I find that my nose/sinuses burn and get stuffy so I just use drops,which really helps.As far as the injection,it burns alot,BUT I find that if I ice the area and bring the Humira to room temp,it helps tremendously!!! Hang in there