Rhinitis Flashcards
Define rhinitis
Inflammation of nasal mucosa
Symptoms of rhinitis
- nasal blockage
- rhinorrhoea
- itchy
- sneezing
What is rhino-conjunctivitis?
Inflammation of nasal mucosa + conjunctivae
What is rhinosinusitis?
Inflammation of nasal mucosa + sinus linings
Types of rhinitis
Allergic (hayfever)
Infective
Non allergic
What is allergic rhinitis also called?
Hay fever
What is allergic rhinitis caused by?
Allergens
- hay
- pollen
- dust
- animal hair
- mould species
Allergic rhinitis classification
Intermittent
Persistent
Mild
Moderate-severe
Compare intermittent + persistent allergic rhinitis symptoms
- intermittent: <4days per week OR <4 consecutive weeks
- persistent: >4days per week AND >4 consecutive weeks
Symptoms of mild allergic rhinitis
ALL of following
- normal sleep
- no impairment of daily activities, sport, leisure, work or school
- symptoms present but not troublesome
Symptoms of moderate-severe allergic rhinitis
- sleep disturbance
- impairment of daily activities, school or work
- troublesome symptoms
Aetiology of allergic rhinitis
- genetic predisposition
- environmental factors
- urban environments
- epigenetic modifications
Pathophysiology of allergic rhinitis
- allergen presented to naive CD4+ T cell by APCs
- TH2 > B cells > plasma cells> IgE synthesis
- IgE cause mast cell degranulation > release of mediators:
-early phase response: histamines, PGs, leukotrienes > mucosal oedema, mucous hyper secretion
-late phase response: chemokines + cytokines > chronic allergic symptoms - leads to sneezing, rhinorrhoea, nasal obstruction + itching
Associated Comorbidities of allergic rhinitis
- asthma
- conjunctivitis
- anosmia
- otitis media with effusion
Diagnosis of allergic rhinitis
Either >2 or >1 on most days of:
- sneezing
- nasal itching
- itching of palate
- rhinorrhoea
- nasal obstruction
- snoring
- sleep problems