pollen allergy


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Related to pollen allergy: hay fever

allergic rhinitis

An inflammatory response in the nasal passages to allergens, which is the most common form of atopic-allergic disease, affecting 5–20% of the general population. Allergic rhinitis is initiated by exposure of the nasal mucosa to airborne antigens, evoking IgE production; upon repeated re-exposure to the allergen (e.g., ragweed pollen), histamine, leukotrienes C4, D4, E4, B4, PGD2, kinins, kininogen and serotonin are released.

Allergic rhinitis is the most widely used of a plethora of terms referring to the effect of allergens on the upper respiratory tract, in particular the nasopharynx. It is often related to environmental antigens—most commonly pollen—thus being known as seasonal allergic rhinitis (colloquially known as hay fever), and less often to “constant” allergens, in which case it is designated perennial allergic rhinitis.

Clinical findings
Paroxysms of sneezing, nasal congestion, nasal and ocular pruritus, tearing, rhinorrhoea, anosmia, ageusia, postnasal drip (which may cause coughing), partial or total obstruction of airflow, throat clearing, and allergic periorbital hematomas (black eyes).
 
Diagnosis
Skin testing with appropriate inhalant allergens is of greater use than measuring serum IgE.
 
Management
Avoid allergens; antihistamines (especially H1-receptor antagonists); sympathomimetic amines; anticholinergics; corticosteroids; decongestants; cromolyn sodium; immunotherapy.

Pathogenesis
Unclear; possibly a hypersensitivity response to allergens in pollen, dander, mites, insects, mould spores, foods; most patients have circulating IgE antibodies that bind to high-affinity receptors on mast cells and basophils, and to low-affinity receptors on other cells, evoking release of inflammatory mediators.

Patient discussion about pollen allergy

Q. I have chronic hayfever problems in the mornings for the first hour.Seems to be a correlation with dairy produ I also got asthma 8 years ago at age 69, after having 2 pet cats. It is controlled with 2 puffs of Symbicord daily, am & pm. Anyone managed a complete cure?

A. Hey lixuri,you mean to tell me after after 25yrs as a therapist,All my patients had to do is drink water all day.i love it,how long does it take to work,an what does the patient do in the mean time if they have a asthmatic attack(drink WAter while you cant breath?-PLEASE SEND ME AN AANSWER.---mrfoot56.

Q. Regarding Seasonal Nasal allergy. My father is suffering from seasonal nasal allergies. He took a 24-hour loratadine pill, 5 hours ago. His nose is still running just like it was. Can I take a benedryl, or is it dangerous to mix loratadine and benedryl? What else can I do to stop my nose?

A. except well known drug interactions- most Dr. check it out with a computer program they have. you need to ask a Dr. or a pharmacist about it. but i can tell you that if you wait 4 times the T1/2 - that is enough to consider the drug out of the system.

Q. is seasonal allergies are treatable?

A. here is the link to the Merck manual about that-
http://www.merck.com/mmhe/sec16/ch185/ch185b.html

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References in periodicals archive ?
He said all pollen allergy patients have been advised to wear allergy masks, avoid environmental exposure and take prescribed anti-allergy medicines.
He informed that extra staff has been deputed in the emergency ward to treat pollen allergy patients.
The official added that 29 nebulizers and 40 beds installed specifically for pollen allergy patients are operational 24 hours of the day.
According to the company, the investigational grass pollen allergy vaccine is based on an innovative technology which Biomay believes has the potential to create a "paradigm shift" in the treatment of allergies.
The report provides comprehensive information on the therapeutics under development for Birch Pollen Allergy, complete with analysis by stage of development, drug target, mechanism of action (MoA), route of administration (RoA) and molecule type.
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July 4 normally marks the end of the grass pollen allergy season, but the delayed start this year caused the pollen season to run until July 11, Jacobson, said.
Further, whereas the term OAS has been used by some authors to describe oral symptoms caused by any food allergen, and not necessarily related to pollen allergy, others have argued that the term pollenfood syndrome (PFS) should be used to highlight the association between pollen sensitisation and oral symptoms, since this is less ambiguous.
Similarly, people with birch pollen allergy can have cross-reactions to celery, but less often than they do to apples.
It identified grass allergy in 55% of patients, pollen allergies in 55%, tree pollen allergy in 41%, cat allergy in 38%, and dog allergy in 15%.
Using a DNA vaccine on humans to treat pollen allergy is not yet permitted in Japan.
Pollen allergy is commonly known as "hay fever," a misnomer that came about because the sniffling, sneezing, and itchy eyes flare up most often in late summer, about the time hay is harvested.