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	<title>sidenreng.com &#187; hay fever</title>
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		<title>Allergic rhinitis (hay fever)</title>
		<link>http://www.sidenreng.com/medical/allergic-rhinitis-hay-fever/</link>
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		<pubDate>Sat, 28 Jun 2008 06:29:03 +0000</pubDate>
		<dc:creator>dedy</dc:creator>
				<category><![CDATA[Medical]]></category>
		<category><![CDATA[Allergic rhinitism]]></category>
		<category><![CDATA[hay fever]]></category>

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		<description><![CDATA[Definition Allergic rhinitis (hay fever) is a reaction to airborne allergens. It affects between 1:6 and 1:10 Americans and is an IgE-mediated disorder of the immune system; 70% of cases occur before age 30. Symptoms resemble those of viral rhinitis but persist and show seasonal variation. This most common form of allergy involves the entire [...]]]></description>
			<content:encoded><![CDATA[<p style="margin-bottom: 0.2in;"><strong>Definition</strong></p>
<p>Allergic rhinitis (hay fever) is a reaction to airborne allergens. It affects between 1:6 and 1:10 Americans and is an IgE-mediated disorder of the immune system; 70% of cases occur before age 30. Symptoms resemble those of viral rhinitis but persist and show seasonal variation. This most common form of allergy involves the entire respiratory system—nasal cavity, mouth, throat, bronchi, lungs, and diaphragm. There is an inherited tendency, with a child having a 50% chance of developing such allergy if one parent is allergic and a 75% chance if both parents are allergic.<span id="more-45"></span></p>
<hr size="1" /><a name="Etiology"></a><strong>Etiology</strong></p>
<p>The cause is an interaction of IgE on mast cells and basophils in the nasal mucosa with antigenic substances, especially pollens, grasses, or ragweed, which produce a seasonal variation; animal fur; dust, insect debris, household mites; inhaled irritants; changes in temperature or humidity.</p>
<hr size="1" /><a name="Risks"></a><strong>Risk Factors</strong></p>
<p>The following conditions can lead to allergic rhinitis.</p>
<ul>
<li>
<p style="margin-bottom: 0in;">Tendency to produce large 	quantities of IgE</p>
</li>
<li>
<p style="margin-bottom: 0in;">Repeated exposure to allergen(s), 	which can be almost anything inhaled, eaten, touched, or injected 	into the body</p>
</li>
<li>
<p style="margin-bottom: 0in;">Sufficient potency and duration of 	exposure</p>
</li>
<li>
<p style="margin-bottom: 0in;">Other allergies</p>
</li>
<li>
<p style="margin-bottom: 0in;">Familial predisposition</p>
</li>
<li>Smoking or prolonged exposure to second-hand smoke</li>
</ul>
<hr size="1" /><a name="Symptoms"></a><strong>Signs and Symptoms</strong></p>
<ul>
<li>
<p style="margin-bottom: 0in;">Nasal obstruction, increased 	secretions, sneezing</p>
</li>
<li>
<p style="margin-bottom: 0in;">Itching of mucous membranes of 	nose, eyes, posterior pharynx, conjunctivae</p>
</li>
<li>
<p style="margin-bottom: 0in;">Sinus symptoms: headache, pressure 	behind the eyes, pain in the frontal area, tenderness over 	cheekbones, aching teeth</p>
</li>
<li>
<p style="margin-bottom: 0in;">Ear infections</p>
</li>
<li>
<p style="margin-bottom: 0in;">Stomach cramps</p>
</li>
<li>
<p style="margin-bottom: 0in;">Skin rashes or hives</p>
</li>
<li>Urinary frequency or diarrhea</li>
</ul>
<hr size="1" /><a name="DiffDiagnosis"></a><strong>Differential Diagnosis</strong></p>
<ul>
<li>
<p style="margin-bottom: 0in;">Viral, bacterial, or fungal 	infections</p>
</li>
<li>
<p style="margin-bottom: 0in;">Sinusitis</p>
</li>
<li>
<p style="margin-bottom: 0in;">Rhinitis medicamentosa</p>
</li>
<li>
<p style="margin-bottom: 0in;">Vasomotor rhinitis</p>
</li>
<li>
<p style="margin-bottom: 0in;">Obstruction of the septum</p>
</li>
<li>
<p style="margin-bottom: 0in;">Bronchitis</p>
</li>
<li>
<p style="margin-bottom: 0in;">Nasal polyps</p>
</li>
<li>
<p style="margin-bottom: 0in;">Swollen adenoids</p>
</li>
<li>
<p style="margin-bottom: 0in;">Systemic diseases—Wegener&#8217;s 	granulomatosis, hypothyroidism (rare)</p>
</li>
<li>Chronic rhinitis</li>
</ul>
<hr size="1" /><a name="Diagnosis"></a><a name="PhysicalExam"></a><strong>Diagnosis Physical Examination</strong></p>
<p>Turbinate mucosa is usually pale or blue and swollen, with nasal obstruction and copious secretions, sneezing, and itching of eyes, nose, and throat. Nasal polyps are uncommon, but serous otitis media occurs often, especially in young children. Cervical lymphadenopathy.</p>
<hr size="1" /><a name="LabTests"></a><strong>Laboratory Tests</strong></p>
<ul>
<li>
<p style="margin-bottom: 0in;">Microscopic examination of nasal 	smear shows high numbers of eosinophils</p>
</li>
<li>Increased IgE level</li>
</ul>
<hr size="1" /><a name="Pathology"></a><strong>Pathology/Pathophysiology</strong></p>
<ul>
<li>
<p style="margin-bottom: 0in;">Submucosal edema</p>
</li>
<li>Congested mucous glands</li>
</ul>
<hr size="1" /><a name="Imaging"></a><strong>Imaging</strong></p>
<p>Sinus X rays for differential diagnosis</p>
<hr size="1" /><a name="OtherProcedures"></a><strong>Other Diagnostic Procedures</strong></p>
<p>On referral to an allergist, the following tests may be done.</p>
<ul>
<li>
<p style="margin-bottom: 0in;">Skin testing—Diluted extracts of 	allergens are injected under the skin or applied to scratches on the 	back or upper arm. Positive results are indicated by raised welts 	surrounded by redness and high serum levels of IgE antibodies.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Radioallergosorbent test 	(RAST)—Blood test to determine IgE levels</p>
</li>
<li>ELISA allergy testing for IgE and IgG</li>
</ul>
<hr size="1" /><a name="Treatment"></a><a name="Strategy"></a><strong>Treatment Options Treatment Strategy</strong></p>
<p>Eliminate rhinitis by maintaining an allergen-free environment.</p>
<ul>
<li>
<p style="margin-bottom: 0in;">Cover pillows and mattresses with 	plastic covers.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Use synthetic materials (foam 	mattresses, acrylics) instead of animal products (wool, horsehair).</p>
</li>
<li>Minimize dust-collecting household items (i.e., carpets, 	drapes).</li>
</ul>
<p>Use of an air purifier/dust filter may help. When the allergen(s) is known, desensitization therapy can be done, which involves gradually increasing subdermal exposure to identified allergens; results vary.</p>
<hr size="1" /><a name="Drugs"></a><strong>Drug Therapies</strong></p>
<ul>
<li>
<p style="margin-bottom: 0in;">Oral decongestants—such as 	pseudoephedrine (Sudafed, 60 to 120 mg orally tid to qid); have 	systemic effects.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Antihistamines—such as 	chlorpheniramine (Chlor-Trimeton; 4 mg orally every 6 to 8 hours, or 	8 to 12 mg orally every 8 to 12 hours as sustained-release tablet), 	clemastine (Tavist; 1.34 to 2.67 mg orally bid; side effect of 	sedation often unacceptable.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Nonsedating antihistamines 	(histamine-receptor antagonists)—such as astemizole (Hismanal; 10 	mg orally daily), loratadine (Claritin; 10 mg orally daily), 	cetirizine (Zyrtec; 10 mg orally daily), fexofenadine (Allegra; 60 	mg orally bid), terfenadine (60 mg orally bid); although expensive 	and by prescription, are especially helpful in those patients who 	are intolerant of drowsiness; astemizole is associated with sudden 	death from presumed QT prolongation, especially in those receiving 	erythromycin or ketoconazole concomitantly; liver disease, 	hypokalemia are contraindications.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Nasal corticosteroid sprays—such 	as beclomethasone (Beconase AQ, Vancenase AQ, 42 mcg/spray), 	fluticasone (Flonase, two sprays in each nostril once daily, 	decreasing to one spray each day, based on response), budesonide 	(Rhinocort, two sprays in each nostril bid or four sprays in each 	nostril every morning), and flunisolide (Nasalide, 25 mcg/spray); 	effective if used appropriately—two activations in each nostril 	bid for one month; improvement takes one to two weeks.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Intranasal steroids—such as 	nasal cromolyn (Nasalcrom, one spray in each nostril tid to qid); 	used in seasonal allergies to shrink nasal polyps; must be started 	24 to 36 hour before symptoms develop and must be used four to six 	times daily.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Alpha-adrenergic agents—applied 	to nasal mucosa; come in short-term and long-acting forms; continued 	use for more than a few days leads to rebound nasal congestion and 	rhinitis medicamentosa.</p>
</li>
<li>Systemic steroids—in severe cases and for short duration 	only.</li>
</ul>
<hr size="1" /><a name="Alternative"></a><strong>Complementary and Alternative Therapies</strong></p>
<p>Allergic rhinitis may be successfully treated with alternative therapies. Begin with nutrition guidelines. Use the tincture and homeopathic remedies for acute exacerbations.</p>
<hr size="1" /><a name="Nutrition"></a><strong>Nutrition</strong></p>
<ul>
<li>
<p style="margin-bottom: 0in;">Eliminate all known food 	allergens.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Minimize pro-inflammatory and 	highly allergenic foods such as saturated fats (meats and dairy 	products), refined foods, eggs, citrus, bananas, chocolate, peanuts, 	wheat, shellfish, food coloring, preservatives, caffeine, alcohol, 	tobacco, and sugar.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Increase intake of whole foods 	including fresh fruits and vegetables, whole grains, nuts, seeds.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Drink plenty of water and include 	fresh juices, especially carrot, celery, parsley, and pineapple.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Vitamin A (10,000 to 15,000 	IU/day), zinc (20 to 30 mg/day), vitamin B6 (50 to 100 mg/day), and 	vitamin B5 (50 to 75 mg/day) for immune support</p>
</li>
<li>
<p style="margin-bottom: 0in;">Vitamin C (1,000 mg tid to qid) to 	reduce inflammation, stabilize mast cells to decreasehistamine 	release</p>
</li>
<li>
<p style="margin-bottom: 0in;">Vitamin E (400 IU/day) for proper 	immune function</p>
</li>
<li>N-acetylcysteine (200 mg tid) to reduce mucous formation</li>
</ul>
<hr size="1" /><a name="Herbs"></a><strong>Herbs</strong></p>
<p>Herbs are generally a safe way to strengthen and tone the body&#8217;s systems. Ascertain a diagnosis before pursuing treatment. Herbs may be used as dried extracts (capsules, powders, teas), glycerites, or tinctures (alcohol extracts). Unless otherwise indicated, teas should be made with 1 tsp. herb per cup of hot water. Steep covered 10 to 20 minutes and drink 2 to 4 cups/day. Tinctures may be used singly or in combination as noted.</p>
<ul>
<li>
<p style="margin-bottom: 0in;">Plants high in flavonoids 	(quercetin, curcuma, rose hips, bilberry) are especially useful as 	they reduce histamine release and stabilize connective tissue. Rose 	hips <em>(Rosa canina)</em> can be used as an infusion or solid 	extract. Nettles <em>(Urtica urens)</em> are traditionally used for 	hayfever and may be drunk as an infusion, 2 cups a day.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Quercetin 250 mg bid to tid to 	reduce inflammation.</p>
</li>
<li>A tincture of equal parts of coneflower <em>(Echinacea 	angustifolia), </em>goldenseal <em>(Hydrastis canadensis),</em> cleavers <em>(Gallium aparine), </em>eyebright <em>(Euphrasia 	officinalis),</em> ginger root <em>(Zingiber officinalis),</em> and 	elderberry <em>(Sambucus nigra)</em> will support immune function and 	lymphatic drainage, as well as increase circulation and tone the 	respiratory system. Take 30 drops bid to tid.</li>
</ul>
<hr size="1" /><a name="Homeopathic"></a><strong>Homeopathy</strong></p>
<p>An experienced homeopath should assess individual constitutional types and severity of disease to select the correct remedy and potency. For acute prescribing use 3 to 5 pellets of a 12X to 30C remedy every one to four hours until acute symptoms resolve.</p>
<ul>
<li>
<p style="margin-bottom: 0in;"><em>Allium cepa</em>—for copious, 	acrid nasal discharge with bland eye lacrimation that is better 	outdoors.</p>
</li>
<li>
<p style="margin-bottom: 0in;"><em>Euphrasia</em>—for bland nasal 	discharge with acrid lacrimation that is relieved by lying down at 	night.</p>
</li>
<li>
<p style="margin-bottom: 0in;"><em>Sabadilla</em>—for sneezing 	with watery discharge from nose and eyes.</p>
</li>
<li><em>Wyethia</em>—for marked itching of the nose, throat, and 	soft palate.</li>
</ul>
<p>Several OTC combination homeopathics are available for hayfever.</p>
<hr size="1" /><a name="PhysicalMedicine"></a><strong>Physical Medicine</strong></p>
<ul>
<li>
<p style="margin-bottom: 0in;">Contrast hydrotherapy. Alternating 	hot and cold applications brings nutrients to the site and diffuses 	metabolic waste from inflammation. The overall effect is decreased 	inflammation, pain relief, and enhanced healing. Alternate three 	minutes hot with one minute cold. Repeat three times to complete one 	set. Do two to three sets/day.</p>
</li>
<li>Nasal lavage. Mix salt and water to taste like tears. Rinse 	nostrils by holding head over sink and letting water run from upper 	nostril to lower nostril. Keep nostrils lower than throat to prevent 	salt water draining into back of throat. Shrinks membranes and 	increases drainage.</li>
</ul>
<hr size="1" /><a name="Acupuncture"></a><strong>Acupuncture</strong></p>
<p>Treatment with acupuncture can help promote both immunity and lymphatic drainage while minimizing the effects of allergic rhinitis.</p>
<hr size="1" /><a name="Massage"></a><strong>Massage</strong></p>
<p>Therapeutic massage is an excellent way to assist local lymphatic drainage.</p>
<hr size="1" /><a name="Monitoring"></a><strong>Patient Monitoring</strong></p>
<p>Tolerance to substances changes over the lifetime, and emotional stress, viral illness, fatigue, exposure to chemical irritants, overexertion, or severe weather conditions can increase reactivity. Eliminating these things can raise the threshold, as can age (the immune system is less efficient, so IgE antibodies are less involved with challenging allergens).</p>
<hr size="1" /><a name="OtherConsiderations"></a><a name="Prevention"></a><strong>Other Considerations Prevention</strong></p>
<ul>
<li>
<p style="margin-bottom: 0in;">If there is a family history of 	allergy, eliminate the usual allergens when possible before symptoms 	develop.</p>
</li>
<li>Breastfed children have healthier immune systems and fewer 	allergies.</li>
</ul>
<hr size="1" /><a name="Complications"></a><strong>Complications/Sequelae</strong></p>
<ul>
<li>
<p style="margin-bottom: 0in;">Development of nonallergic 	rhinitis medicamentosa from use of nasal sprays more than twice 	daily for three consecutive days.</p>
</li>
<li>
<p style="margin-bottom: 0in;">With use of cortisone—cataracts, 	glaucoma, increased blood pressure, ulcers, diabetes, edema, loss of 	bone density, avascular necrosis of bone and suppression of adrenal 	gland function.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Use of antihistamines or oral 	steroids may actually increase sensitivity.</p>
</li>
<li>
<p style="margin-bottom: 0in;">Secondary infections</p>
</li>
<li>Compromised pulmonary function</li>
</ul>
<hr size="1" /><a name="Prognosis"></a><strong>Prognosis</strong></p>
<p>Symptomatic relief is generally achieved.</p>
<hr size="1" /><a name="Pregnancy"></a><strong>Pregnancy</strong></p>
<p>High levels of vitamins A and C are contraindicated in pregnancy.</p>
<hr size="1" /><a name="References"></a><strong>References</strong></p>
<ul>
<li>The Burton Goldberg Group. <em>Alternative Medicine: The Definitive Guide. </em>Tiburon, Calif: Future Medicine Publishing, Inc; 1997.</li>
<li>Ferri FF. <em>Ferri&#8217;s Clinical Advisor: Instant Diagnosis and Treatment. </em>St Louis, Mo: Mosby-Year Book; 1999.</li>
<li>Fisher C. Nettles: an aid to the treatment of allergic rhinitus. <em>Eur J Herbal Med.</em> 3(2): 34-35.</li>
<li>Morrison R. <em>Desktop Guide to Keynotes and Confirmatory Symptoms. </em>Albany, Calif: Hahnemann Clinic Publishing; 1993.</li>
<li>Noble J, ed. <em>Textbook of Primary Care Medicine. </em>2nd ed. St Louis, Mo: Mosby-Year Book; 1996.</li>
<li>Tierney LM Jr, McPhee SJ, Papadakis MA, eds. <em>Current Medical Diagnosis and Treatment </em>1994. Norwalk, Conn: Appleton &amp; Lange; 1994.</li>
</ul>
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