Allergy symptoms often involve sinuses and eyes:

• A runny nose
• Watery, itchy eyes
• Sneezing
• Allergic shiners - the dark circles children with allergies often get under their eyes
• An allergic salute common in children - the upward tilt of the nose with a crease on top, caused by the child's continual upward swiping at an itchy nose.

People with allergy symptoms often have asthma. Sometimes a cough is the first symptom of asthma, but a cough can be a symtpom of other things also. Wheezing, especially at night or after exercise, is common with asthma.

Atopic skin diseases such as eczema, together with a runny nose and asthma, form what is known as an "allergic triad" of the three conditions most commonly associated with symptoms of allergies.

A rash can be a symptom of contact dermatitis caused by an allergy to something that has come in contact with the skin, such as poison ivy or metal.

Another skin condition, urticaria (hives), is often considered a symptom of allergies, but not all urticaria is caused by an allergic response. Allergic urticaria is often related to drug, food, or latex allergies, but many times it is not known what triggers the urticaria.

Allergies cause increased drainage which can collect in the sinus cavities or ears. This moisture is a perfect environment for bacteria to grow, and many people with allergies have chronic sinus infections or ear infections.

Gastro-intestinal symptoms such as burning in the mouth and throat, nausea, bloating, and diarrhea can sometimes occur with allergies to foods.