||Vision rx20 Allergies and Hay fever If you have a feather comforter and find that you often wake up with bags under your eyes it can be a sign that you are allergic to feathers. Try switching to quilts and pillows filled with cotton or synthetic material. Dark circles under the eyes can be the result of allergies to airborne substances, such as pollen, dust, and pet dander, because people rub their itchy eyes. People with hay fever may notice them at the height of the season. Food allergies or sensitivities can also contribute to dark circles.