If you have a swollen, red, and painful eyelid, it could potentially be a sign of a more serious issue. It is recommended to seek medical attention from an optometrist or physician. If you are experiencing additional symptoms such as light sensitivity, decreased vision, headaches accompanied by nausea, it is important to get a proper evaluation to determine the cause of your symptoms. If you do not have these additional symptoms, you can also visit a pharmacist for advice on how to manage your swollen eyelid.