8 Questions
What type of nerve endings are responsible for nasal pruritus?
Unmyelinated nociceptor C-fibers
Which receptor is associated with prominent sneezing in allergic rhinitis?
H1 receptor
What triggers sneezing and itching through TRP channels in allergic rhinitis?
Low pH levels
Which type of nerve fibers innervate the nasal glands leading to rhinorrhea?
Parasympathetic nerves
What causes engorgement of sinusoids in the inferior/middle turbinates and nasal septum in nasal congestion?
Vasodilation of nasal arterioles
What is responsible for nasal congestion without central reflex activity in allergic rhinitis?
$\text{Leukotriene D4 (LTD4)}$
Which receptor leads to sympathetic vasoconstriction in allergic rhinitis?
$\text{H3 receptor}$
What classification criteria are used for allergic rhinitis based on frequency?
(Intermittent, persistent)
Test your knowledge on the relationships between asthma, sinusitis, allergic rhinitis, otitis media with effusion, and their associated symptoms and triggers.
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