What happens in the body during an allergic reaction?

Mar 18, 2024 ... 1. Tree Pollen Pollen from trees is a major allergen. In Louisiana, tree pollen is significant in the spring, originating from several types of trees. ... allergens that cause inflammation driven by type 2 helper (Th2) cells. ... [7] Seasonal allergic rhinitis seems to be more common in the pediatric age ... One symptom not typically associated with hay fever is an actual fever, so if your child runs a fever, that probably means it's something else. “Children ... Symptoms of seasonal allergies · sneezing · runny or stuffy nose · watery and itchy eyes · itchy sinuses, throat, or ear canals · ear congestion · postnasal ... Likely triggers include tree pollen, grass, mold, and ragweed. Whatever the cause, allergies can make you feel miserable. “One aspect of allergies is that ... A fall allergy goes under the category of allergic rhinitis, also called hay fever, which happens when your body's immune system reacts to an inhaled pollen in ... Jan 22, 2025 ... Pollen getting to you? WebMD explains what do to if you're allergic, so you can still enjoy the season. 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 ... 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 ... Feb 21, 2019 ... Sometimes referred to as hay fever, seasonal allergies occur when your immune system overreacts to an outdoor allergen. The result is coughing, ...