Hello you have condition called Allergic rhinitis, often called hay fever, occurs when your immune system overreacts to particles in the air that you breathe-you are allergic to them. Your immune system attacks the particles in your body, causing symptoms such as sneezing and a runny nose. The particles are called allergens, which simply means they can cause an allergic reaction. In most cases, when you have allergic rhinitis:You sneeze again and again, especially after you wake up in the morning. You have a runny nose and postnasal drip, may lead to sinus infection. Your eyes are watery and itchy. Your ears, nose, and throat are itchy. You probably know that pollens from trees, grasses, and weeds cause allergic rhinitis. Many people have allergies to dust mites, animal dander, cockroaches, and mold as well. Things in the workplace, such as cereal grain, wood dust, chemicals, can also cause allergic rhinitis Any condition that causes the eyes to itch can contribute to darker circles due to rubbing or scratching the skin around them.Hay fever sufferers in particular will notice under-eye "smudges" during the height of the allergy season. Some food allergies can also cause the area under the eyes to appear darker.