What is the role of the immune system in allergic reactions?

Mar 27, 2023 ... Spring can be a rough time if you have seasonal allergies. It's the time of the year when grass, weed and tree pollens run high, causing ... Apr 8, 2025 ... Key Takeaways · Allergens that commonly cause seasonal allergies in dogs include pollen, mold and yeast, and dust mites. · Symptoms of dog ... 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 ... Dogs can have seasonal allergies caused by allergens in the air, such as pollen, mold, or dust. Dogs with allergies typically have itchy, irritated skin and ... Autumn is prime time for a major allergen—weed pollen. Specifically, ragweed is the most common allergy trigger in the fall with pollen levels highest in early ... Mar 31, 2024 ... This type of allergic rhinitis is commonly called hay fever or seasonal allergy. Causes. Expand Section. An allergen is something that triggers ... Mar 7, 2022 ... Some common culprits causing seasonal allergies include: Grasses; Pollen; Trees; Weeds. If you have allergy symptoms year-round, you could be ... Jun 25, 2024 ... Certain molds may also cause seasonal allergy symptoms. Pollen counts vary by region, depending on climate. You can take some measures to avoid ... Apr 24, 2024 ... We identified a clear nonlinear positive association between pollen exposure and ocular and nasal symptom severity in the pollen allergy group. Apr 9, 2024 ... It's allergy season. If your cough is caused by seasonal allergies, also known as hay fever or seasonal allergic rhinitis, you might cough ...