About Hay Fever: Symptoms and Complications
Most people with hay fever know they have it. The symptoms are unmistakeable - runny nose, sneezing, itching, and congestion. Other common symptoms include watery eyes, coughing, headaches, and irritability.
Hay fever usually appears regularly at the same time each year. This is how people can distinguish it from other allergies like house dust mite or cat dander. Another difference is that while hay fever often causes red eyes, "indoor allergies" tend to leave the eyes alone but can cause minor blockage of the ears, particularly in children.