Seasonal allergic rhinitis is stimulated by an allergic reaction of human body to pollen and spores. This is much depending on the season and region as they are carried by the wind. Your doctor may recommend you to undergo allergies medication that depends on your type of allergy rhinitis. In the case of seasonal allergic rhinitis (commonly due to hay fever), then you better starting your allergies medication a few weeks before the pollen allergy season.
The tendency to develop IgE mediated allergy reactions to external allergen IgE (proteins that can trigger an allergic reaction) has a genetic component. In sensitive individuals, exposure to certain foreign proteins leads to allergic sensitization through the production of specific IgE to these proteins characterized. This specific IgE coats the surface of mast cells in the nasal mucosa. If the specific protein ( eg a particular pollen grain ) is inhaled through the nose, there will be IgE binding on mast cells, leading to immediate and delayed release of a number of mediators. Mediators are released immediately, including histamine receptor, tryptase, chymase, kinins and heparin. Mast cells synthesize quickly other mediators, including leukotrienes and prostaglandin D2. These mediators, through various interactions ultimately about the symptoms of rhinitis ( ie nasal congestion, sneezing, itching, redness, watery eyes, swelling, ear pressure, postnasal drip ) lead. Mucus glands stimulated, which increased to a secretion. Vascular permeability is higher, leading to plasma exudation. Vasodilation occurs, leading to congestion and pressure. Sensory nerves are stimulated, leading to sneezing and itching. All these events can happen in a few minutes, so that this reaction is called early or immediate phase reaction.
Bellow is some seasonal allergic rhinitis symptoms that are common among the allergic patients:
- Patients experience an IgE-mediated reaction of the nasal mucosa to one or more seasonal allergens.
- Symptoms occur, or are increased, during certain seasons.
- Symptoms are periodic, correlating with seasonal variation in aeroallergens.
- Characteristic symptoms include: watery rhinorrhea, watery eyes nasal congestion, repetitive sneezing, pruritus of the eyes, nose, ears, and throat.
- Nasal secretions usually contain eosinophils.
- Common allergens causing seasonal allergy symptoms rhinitis: Grass pollens, Tree pollens, Weed pollens, and Fungal (mold) spores.
The doctor will do a physical examination and ask you questions about your seasonal allergic rhinitis symptoms. The history of symptoms, the diagnosis of allergic rhinitis important, even if the symptoms vary depending on time of day or season, and exposure to pets or other allergens. Allergy patch tests can trigger it turns out that certain substances, the symptoms. Allergy skin tests are the most common method of allergy testing. See the article on allergy tests for detailed information. If your doctor finds that you can not undergo skin testing, special blood tests to help diagnose the problem. These tests can measure levels of specific allergy - related substances, particularly an immunoglobulin E ( IgE).
