Allergic Rhinitis e-Module Flashcards
Rhinitis definition
inflammation of nasal mucosa
how much of the population does rhinitis affect
40%
Rhinitis is the presence of one or more of what symptoms
sneezing
rhinorrhea
nasal congestion
nasal itching
what is the most common form of chronic rhinitis
allergic rhinitis AKA hay fever
25% of CAN pop
+prevalence is increasing
What is AR
systemic
IgE antibody-mediated
inflammatory disease
what characterizes AR
inflammation (swelling and or irritation of inside of nose (nasal mucosa) following allergen inhalation
classifications of allergens
indoor and outdoor
outdoor allergens
grass or tree pollen
mould
indoor allergens
dust mites and insects
animal dander
impacts of AR
negative impacts on social life, sleep, concentration ability, school performane, wrk productivity
where is prevalence hgihest
school aged children
-may be more common in children with history of asthma and atopic dermatitis
atopic triad
AR, asthma, atopic dermatitis
How get AR
genetic predisoposition
- 1 parent affected, children 30% chance dev
- 2 parents –> 50%
AR localization
historically
-nose and nasal passages
Current evidence
-component of systemic airway disease involving entire respiratory tract
allergy/sinus relief is in top 10 OTC cat in CAN (T/F)
True
How RPh optimize care for AR patients
need to ID patient cohorts who self-select and are at high risk of mismanagement
—> opportunity for RPh to enegage pateints and encourage discussion abt AR mngmnt
Pathophysiology and Etiology
multifactorial disease induced by gene-environment interactions
characteristic symptoms are result of an antigen-antibody mediated reaction
-3 phases
what are the 3 phases of the antigen-antibody mediated reaction
sensitization
immediate response
late phase reaction
Sensitization
- allergen enters nose –> sensitizes mucosal mast cells
- sensitization occurs via t-cell release of cytokines
- cytokines promote allergen-specificIgE antibody production by plasma cells
- IgE binds to mast cells and basophils
THIS FIRST PHASE OCCURS ON 1ST CONTACT WITH ALLERGEN
-second and third phase are on re-exposure to allergen in sensitized individual