Hay fever, also called allergic rhinitis, can cause:SneezingItching of the nose, eyes or roof of the mouthRunny, stuffy noseWatery, red or swollen eyes (conjunctivitis)A food allergy can cause:Tingling in the mouthSwelling of the lips, tongue, face or throatHivesAnaphylaxisAn insect sting allergy can cause:A large area of swelling (edema) at the st