Although most allergies are known to cause irritation to the nose and eyes, some people also complain of ear and sinus problems. Research has shown that food allergies can be responsible for middle ear infections when they causecongestion or fluid build-up in the eustachian (you-STAY-shun) tubes that connect the nose and ear. Because many physicians treat the infection instead of the allergic cause, the infection sometimes reappears. Sinus problems in those with allergies are also common and may become chronic with clear, yellow, or green nasal mucus, often accompanied by a nighttime cough. Headaches are also associated with ear and sinus allergies, although these tend to occur mostly in adults. If you suffer from ear and sinus discomfort, it may be helpful to visit an allergy specialist for testing. Once the cause is found, the proper treatment can be prescribed. Various medications are available to reduce the effects of ear and sinus allergies, so check with your doctor or allergist for more information.