Allergies, also called hypersensitivity reactions are exaggerated responses of the immune system to come into contact with certain substances, called allergens. Its appearance is exacerbated in the spring, because one of the most frequent groups of allergens are pollens, reproductive cells of plants that proliferate during this season. Other allergenic agents are environmental fungi, dust mites and the epithelia of some animals, such as dogs, cats, horses and rodents. They can also generate allergic reactions to certain foods or drugs and the bite of insects like bees or wasps.
The seasonal allergy , sometimes called “hay fever” or “seasonal allergic rhinitis”, presents with Seasonal Allergies Symptoms that occur during certain seasons, usually when the outdoor mold releases spores and plants they release tiny particles of pollen into the air to fertilize other plants. The immune systems of people allergic to mold spores or pollen treat these particles (called allergens) as if they were invasive and release chemicals, such as histamine, into the bloodstream to defend against them.
It is the release of these chemicals that causes the allergic symptoms. The pollen count measures the amount of pollen in the air, so it can help people who are allergic to know how bad their symptoms might be on a given day. Pollen concentrations are usually higher in the morning and on warm, dry and windy days and lower on cold and wet days. Although not always accurate, pollen counts that facilitate local weather forecasts can help plan outdoor activities.
Seasonal Allergy triggers can be mild or severe. Most of them consist only of the discomfort caused by tearing and itchy eyes, in addition to some sneezing. At the opposite extreme, allergic reactions can be life-threatening if they cause sudden respiratory distress, poor heart function and a marked drop in blood pressure, which can lead to shock. The different types of allergic reactions are usually classified according to their cause, the part of the body most affected and other factors. There are tests that can help determine if the symptoms are related to the allergy and to identify the allergen involved.