Can hayfever lead to a cold?

No, hayfever does not lead to a cold. Hayfever, also known as allergic rhinitis, is an allergic reaction to pollen and other airborne allergens. It causes symptoms such as sneezing, itchy eyes, runny nose, and congestion. A cold, on the other hand, is a respiratory infection caused by viruses. The symptoms of a cold are similar to those of hayfever, but they are usually more severe and can include a fever, sore throat, and muscle aches.