How do decongestants help with seasonal allergy symptoms?

What Causes Seasonal Allergies? For the most part, seasonal allergies are caused by airborne pollens -- very fine powder released by trees, grasses and ... Environmental allergens for dogs include pollen, molds, grass, trees, and dust mites. Another common allergen is flea saliva, which causes a disease called ... Pollen is one of the most prevalent causes of seasonal allergies. Other allergens that might affect your eyes are dust mites, mold, perfumes and fragrances, ... Although allergies can cause neck pain, join pain and back pain, there are many things you can try to make the pain subside. Jan 22, 2025 ... Pollen getting to you? WebMD explains what do to if you're allergic, so you can still enjoy the season. Aug 3, 2023 ... ... Allergic reactions are caused by an immune response to contact with allergens. Allergens can include but are not limited to: Dust Pollen Pet ... Histamine and other chemicals are released by one's body into the bloodstream to combat the pollen and causes allergy symptoms. Hay fever (also known as ... Substances called allergens cause seasonal allergies. These allergens are airborne pollens from trees, grasses, weeds and mold spores that frequently trigger ... Mar 14, 2023 ... This also may help decide if they likely are caused by allergies. For example, tree pollen is most common in the spring. Grass pollen is common ... It's the release of these chemicals that causes allergy symptoms. People can be allergic to one or more types of pollen. The type someone is allergic to ...