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Rhinitis -combination of sneezing, discharge and blocking lasting >1 hour on most days
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Prevalence of Rhinitis Affects 25% of the population Allergic rhinitis is the commonest allergic disorder in Primary Care Co-morbidity with asthma “One airway, one disease”
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Impact of rhinitis Loss of sleep Social embarrassment Poor performance and concentration Loss of productivity at work, hence economic implications Learning difficulties at school
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History Purulent or non purulent Unilateral from bilateral Seasonal (intermittent) and perennial (persistent) Social and environmental factors Asthma and dermatitis - atopy Trigger factors and non-specific irritants
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Symptoms in allergic rhinitis IntermittentPersistent SneezingAlwaysVariable Eye symptomsCommonRare Blocked noseVariableAlways Nasal secretionCommonVariable Disturbed smellVariableCommon AsthmaVariableCommon
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Aeroallergens Grass pollen Tree pollens esp. Birch House Dust Mite Dog, Cat and other furry animals Nettles Moulds
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Key points Reactions to NSAIDS and Aspirin especially with polyps Allergic versus non allergic - history + SPT Food allergy is a very rare cause of isolated rhinitis
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Examination Face - allergic salute and nasal crease, dark circles around eyes Rhinoscopy/endoscopy -polyp or turbinate? nasal patency? Exclude other mechanical factors - foreign body Skin prick tests and RAST Imaging
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Miscellaneous causes of rhinitis Idiopathic Rhinitis medicamentosa (decongestants) Cocaine abuse Hormonal - Oral contraceptives, Pregnancy and Hypothyroidism Antihypertensives- ACE inhibitors, Blockers, Other drugs - Chlorpromazine and aspirin Wegeners Granulomatosis Cystic fibrosis/CSF leak
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Non specific irritants - precipitate or aggravate Cold air Dust Fumes Paint Polluted air Washing powder Hot spicy food Alcoholic beverages Printing ink Rape odour
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Pollen avoidance measures! Pollen count max late pm Sleep with windows closed Excuse not to mow the lawn Keep car windows closed - consider a filter Wear sunglasses Holiday in costal areas Listen out for pollen count forecasts
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Allergen avoidance in Perennial Rhinitis Animal dander No pets Wash pets Keep pets outside Thorough vacuuming Sensitisation to cat without direct exposure to cats! Clin Exp Allergy 1999:29;762-765 House dust mite No carpets No furry toys Encasement bedding Increase ventilation Hot wash bed linen Vacuum regularly Feather pillows OK Freeze cuddly toys Damp dust
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Avoidance ? Possible In UK – 95% time spent indoors –95% wall to wall carpets –16 million cats and dogs versus 10 million children –high prevalence of allergens in public place
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Drug Treatment Antihistamines Intra-nasal corticosteroid sprays Cromoglycate and nedocromil Nasal decongestants (1 week max.) Oral steroids NOT depo-steroids Desensitisation - grass pollen, cat and HDM route of administration - sc/sublingual Anti IgE therapy
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Any place for depot triamcinolone in hayfever? Drugs and Therapeutics Bulletin 1999:37:3;17-18 Depot corticosteroid treatment for hay fever causing avascular necrosis of both hips. Nasser and Ewan BMJ 2001:322;1589-1591
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