Hayfever can also be called seasonal allergic rhinitis, and refers to an allergic reaction which can occur when a person is exposed to pollen. The symptoms of hayfever look similar to those of a cold, and include a runny nose, sneezing and itchy eyes.
Allergic reactions to other stimuli can provoke a similar response in the body, and an allergy sufferer could experience more extreme symptoms such as rashes, wheezing or coughing or asthma type symptoms too. Mild allergic reactions can be prevented by avoiding contact with the food or substance that triggers it, and discomfort can often be relieved by antihistamines, decongestants or creams. In the case of severe, life-threatening allergies, the sufferer must be injected with an epipen to avoid anaphylactic shock, and should avoid even touching the stimuli they are allergic to.