Management of Periorbital Cellulitis

Classification and Diagnosis

Periorbital cellulitis involves only the eyelid, while postseptal inflammation involves structures of the orbit 1
Diagnosis is primarily clinical, based on eyelid swelling, erythema, and tenderness without orbital involvement 1
Blood cultures are not routinely recommended for typical cases but should be considered in immunocompromised patients 2

Outpatient management with oral antibiotics active against streptococci and staphylococci is recommended for mild cases 1
High-dose amoxicillin-clavulanate is recommended for comprehensive coverage 1
Treatment duration is typically 5 days, extending if no improvement is seen 2, 3
Hospitalization for intravenous antibiotic therapy is recommended for moderate to severe cases 1, 2
Empiric coverage should include agents effective against both streptococci and staphylococci 2, 4
Vancomycin is recommended if MRSA is suspected 2, 4

For mild cases: High-dose amoxicillin-clavulanate orally is recommended 1, 5
For moderate to severe cases requiring hospitalization: Vancomycin plus either piperacillin-tazobactam or imipenem/meropenem for severe infections 2
For penicillin-allergic patients: Clindamycin or linezolid plus cefixime is recommended 1

Elevation of the affected area to promote gravity drainage of edema is recommended 2, 5
Treat underlying conditions that may harbor pathogens 2

Indications for surgery include formation of subperiosteal or orbital abscess, deterioration of vision, and no improvement despite 24-48 hours of appropriate antibiotic therapy 1
Intracranial extension is a indication for surgical intervention 1

Failure to recognize progression from periorbital to orbital cellulitis can lead to permanent blindness if not treated promptly 1
Inadequate antibiotic coverage for both streptococci and staphylococci can lead to treatment failure 2, 4
Not obtaining imaging when signs of orbital involvement are present can delay diagnosis and treatment 1
Failure to consult appropriate specialists for moderate to severe cases can lead to poor outcomes 1