5. Itchy Eyes
Having itchy eyes is a much less serious problem than having different sized pupils. Itchy eyes are most commonly caused by allergies. When you have allergies, your body produces histamines, which can make your eyes itch. They can also make your nose run, your throat sore, your skin break out in a rash, and they can even cause swelling. Fortunately, there is a simple solution to an allergic reaction. You can take over the counter antihistamines, such as Claritin or Benadryl.