Nasal, Sinus, and Seasonal allergies are primarily caused by an overreaction of the immune system to airborne substances known as Allergens. Common allergens include pollen, dust mites, mold spores, and pet dander. When these allergens are inhaled, the immune system mistakenly identifies them as harmful and releases chemicals such as histamines into the bloodstream, which leads to the inflammation and irritation of the nasal passages and sinuses. The onset of seasonal allergies, often referred to as hay fever or allergic rhinitis, is typically linked to specific times of the year when certain plants release pollen into the air. Springtime pollen from trees, summer grasses, and fall weeds like ragweed are usual culprits. Additionally, factors such as genetics, environmental exposure, and underlying Health conditions can increase an individual’s susceptibility to developing these allergies.