I have had severe hay fever for a very long time and I have never had or heard of anyone having neck pain associated with it. Also, if you a bad sore throat may
not be due to allergies. You should have both of those checked by a doctor.
Good luck.
Sometimes neck pain can refer up to the face. I'm still trying to find out what's wrong with me, but one of my ENTs says its neck pain, specifically the sternocleidomastoid. Google it, or try a physical therapists. Might be worth it, just to try. I am going to the PT, although I'm not totally convienced that's my problem...at this point I will try anything.