pollen allergy


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Related to pollen allergy: hay fever

pollen allergy

See 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.

pollen

the male fertilizing element of flowering plants.

pollen allergy
see canine atopy.

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

More discussions about pollen allergy
References in periodicals archive ?
He said that the newly established pollen allergy has two pulmonologists, 29 nebulizers and 40 beds including 20 reserved in the main emergency of the hospital.
Dr Kaleem Ullah Tori said that ratio of pollen allergy patients was more in Islamabad as compared to other cities.
The hospital said 29 new nebulisers have been installed in new emergency of basic diseases while total 200 nebulisers have been activated in Pims for pollen allergy patients.
Wasim Khawaja told that with the advent of spring season, pollen count in the air increases, which affect the pollen allergy patients.
The report provides a snapshot of the global therapeutic landscape of Birch Pollen Allergy
The report reviews key players involved in the therapeutics development for Cedar Pollen Allergy and enlists all their major and minor projects
The study initially randomized 633 adult patients with grass pollen allergy at several European centers.
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.
Japan is the world's second-largest market for allergy medicines after the USA as some 20-30% of the population of 127 million people suffer from house dust mite allergy or Japanese cedar pollen allergy, ALK-Abello 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.
According to an Eisai survey, more than 50 percent of the people who suffer from pollen allergy answered that they constantly feel itching of skin, and 70 percent said that they experience allergic problems all year.
Similarly, people with birch pollen allergy can have cross-reactions to celery, but less often than they do to apples.