How often should air conditioning filters be cleaned or replaced?

Learn how your allergies can cause sinus pain and congestion, and what steps you can take to relieve sinus and allergy symptoms. Woman with seasonal allergies ... Environmental allergens for dogs include pollen, molds, grass, trees, and dust mites. Another common allergen is flea saliva, which causes a disease called ... 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 ... People may react to one or more pollens, so their pollen allergy season may be from early spring to late fall. Seasonal allergy is also caused by mold spores, ... Mar 24, 2025 ... What causes seasonal allergies to develop? ... Seasonal allergies are reactions to environmental elements like pollen or mold spores that tend to ... ... allergy-immunology fellowship. And this year, record-high pollen counts have caused seasonal allergies to start even earlier than usual—which means ... Hay fever causes symptoms such as sneezing, a runny nose and watery, itchy eyes. It can be triggered by seasonal allergens like pollen and grass, or year ... Mar 9, 2023 ... ... allergic rhinitis (including seasonal allergies) and asthma, explained Patel. ... These chemicals cause the many symptoms of allergies ... Mar 21, 2023 ... Tree pollens, grass pollens, and weed pollens are the most common causes of seasonal allergies. With the beautiful forests of Central Virginia, pollination ... Nov 13, 2019 ... Seasonal allergies are very common. But with a few simple steps, you can often nip the symptoms of seasonal allergies in the bud!