What are the common environmental allergies?
Allergic rhinitis (also called hay fever) is the most common form of allergy to the environment. Allergy symptoms often vary with the seasons. Symptoms of environmental allergies include: Stuffy, runny nose, sneezing, itchy nose, eyes, and throat "Sinus" symptoms?headache, feeling of pressure behind the eye, pain above the cheekbones and on the lower forehead, aching teeth, skin rashes or hives, diarrhoea or frequent urination

Environmental allergens are: pollens, grasses, or ragweed (in certain seasons and areas), dust and household mites changes in temperature or humidity, spicy foods, smoking or prolonged exposure to second-hand smoke, and air pollution.