Learn Why You Are Allergic to Pollen, Dust, Dog and Cat Hair
All allergic reactions are immune system disorders. The symptoms can vary in harshness between individuals and also depend upon the allergen. Many allergies result in symptoms like sneezing, a runny nose, and itchy, watery eyes.Pollen, dust, and cat and dog hair often cause these types of symptoms. All of these allergens are airborne particles. These types of allergies are much different from food-related allergies , although both are immune system reactions. When you have an allergy and you are exposed to the allergen, your immune system overreacts to the stimuli. Allergens are all harmless substances, but your body mistakes them for dangerous substances. Your immune system reacts by producing antibodies and continues to react to the substances each time you are exposed. Allergies can develop at any time. You may become allergic to something you were not previously allergic to, and your allergies may change in severity over time, as well, as your body responds differently to ...