So I went to my ENT doctor so he could take out wax from my ear and i told him that ive had allergies since i was 11 and ive been getting allergy shots for 2 years now and it works very well for me. anyways he looked up my nose and told me i had a deviated septum and no doctor has ever told me that but i trust this one since hes known to be one of the best ent doctors in la. can anyone explain to me what a deviated septum is and do i need surgery?