thank you for query.
or hay fever
may follow when an allergen such as pollen or dust is inhaled by an individual with a sensitized immune system, triggering antibody production. These antibodies
mostly bind to mast cells, which contain histamine
. When the mast cells are stimulated by pollen and dust, histamine (and other chemicals) are released. This causes itching, swelling, and mucus production. Symptoms vary in severity between individuals. Very sensitive individuals can experience hives or other rashes. Particulate matter in polluted air and chemicals such as chlorine and detergents, which can normally be tolerated, can greatly aggravate the condition.
Characteristic physical findings in individuals who have allergic rhinitis include conjunctival swelling and erythema
, eyelid swelling, lower eyelid venous stasis, lateral crease on the nose, swollen nasal turbinates, and middle ear effusion
Even if a person has negative skin-prick, intradermal and blood tests for allergies, they may still have allergic rhinitis, from a local allergy in the nose. This is called local allergic rhinitis. Many people who were previously diagnosed with nonallergic rhinitis may actually have local allergic rhinitis.
The management of rhinitis depends on the underlying cause. High-dose administration of Vitamin B12
has been additionally validated to stimulate the activity of the body's TH1 suppressor T-Cells, which then down-regulates the over-production of the allergen antibody IgE in allergic individuals which could decrease both near and long term manifestations of rhinitis symptomology.
so prevention is better than cure.