Periorbital cellulitis Flashcards
(12 cards)
Periorbital cellulitis is an infection of…
the eyelid or skin around the eye, anterior to orbital septum
True or false: periorbital cellulitis is more severe that orbital cellulitis
False.
Less severe but more common.
What causes peri-orbital cellulitis?
A superficial injury like an insect bite
Upper respiratory tract infections
Sinusitis
What are symptoms and signs of peri-orbital cellulitis?
Pain
Eye redness
Mild tenderness
Swelling
Fever
Recent insect bites,
URTI
True or false: there is pain on eye movement in peri-orbital cellulitis
False
No pain on eye movement.
Should have colour vision intact and no signs of chemosis (swelling eye surface) or proptosis (bulging eyes)
If there is severe eyelid swelling, it may be difficult to rule out underlying _____ involvement and imaging may be required
orbital
It can be difficult to differentiate between periorbital and orbital cellulitis in children so what should be done?
Urgently referred
Empirical IV antibx treatment
Daily review
Peri-orbital and orbital cellulitis are dependent on whether the infection is anterior or posterior to the _______ _____
orbital septum
True or false: Orbital cellulitis is sight-threatening
True
Can cause painful eye movements, reduced visual acuity, reduced colour vision.
When infection in the muscle and fat within the orbit, posterior to the orbital septum.
What are investigations for orbital cellulitis?
Endonasal swab
FBC
CRP
Lactate (raised if septic)
Blood culture
Microscopy
CT orbit, sinuses and brain
What is the most common cause of orbital cellulitis?
A local spreading infection from acute bacterial sinusitis, typically from the paranasal sinuses.
If an orbital collection is seen on imaging of orbital cellulitis, what is surgical management may be required?
Evacuation of orbital pus
Drainage of paranasal sinus pus
