Symptoms of an allergic reaction can be quite varied. You may find that your eyes are red and irritated or itchy, that your eyes are sensitive to light or that your eyelids are swollen. In more severe cases, you may even notice a painful, sore, or burning feeling in your eyes or suffer from excessive tearing or a runny nose. You may also experience sneezing and a stuffy nose.
Many things may cause an allergic reaction. Grass, weed and tree pollen, as well as dust and pet dander, are among the best-known allergens. Less well known is that it is also possible for a person to be allergic to everyday items such as makeup or perfume, and even contact lenses. Also not well known is that, while it is very common for allergic symptoms to come out immediately upon contact with the allergen, it is also possible for an allergic reaction to present itself as much as four days after original contact with an allergen.