Differential Diagnosis for Bilateral Eyelid Swelling

Immediate Red Flag Assessment

The American Academy of Ophthalmology recommends immediate assessment for orbital cellulitis red flags, including proptosis, painful eye movements, vision loss, or fever, which require emergent hospitalization, IV antibiotics, and urgent ophthalmology consultation 1
Examination for proptosis or restricted/painful extraocular movements is crucial in the assessment of bilateral eyelid swelling 1
Vision changes or decreased visual acuity must be examined specifically, as they can indicate serious underlying conditions 1
Fever or systemic toxicity should be assessed, as they can be indicative of orbital cellulitis 1
Corneal involvement on fluorescein staining is mandatory in every case of bilateral eyelid swelling 2

The American Academy of Ophthalmology states that adenoviral conjunctivitis is the most common infectious cause of bilateral eyelid swelling in adults, typically presenting with watery discharge, bulbar conjunctival injection, chemosis, and follicular reaction of the inferior tarsal conjunctiva 3, 2
Gonococcal conjunctivitis presents with marked eyelid edema, marked bulbar conjunctival injection, and marked purulent discharge, and is associated with urethritis or pelvic inflammatory disease in adults 4
Herpes Simplex or Varicella Zoster should be considered, as they can progress to keratitis, corneal scarring, and perforation, and typically present with eyelid vesicles or dermatomal rash 5, 2
Molluscum contagiosum can cause bilateral eyelid swelling, and is characterized by shiny, dome-shaped umbilicated lesions on the eyelid skin or margin, with associated follicular conjunctivitis 5, 2

Vasculitis, including granulomatosis with polyangiitis, Churg-Strauss syndrome, can cause bilateral conjunctivitis with conjunctival nodules, symblepharon, and systemic involvement of lungs, kidneys, and skin 3
Stevens-Johnson syndrome/Toxic Epidermal Necrolysis presents with bilateral bulbar conjunctival injection, membranes, and conjunctival scarring, typically following systemic medications or infections 3
Graft-versus-host disease should be considered in patients who have undergone allogeneic stem cell transplantation, presenting with bilateral conjunctival injection, chemosis, and pseudomembranous conjunctivitis 3

Sebaceous carcinoma can masquerade as chronic unilateral blepharoconjunctivitis, but may present bilaterally, and biopsy is indicated for unifocal recurrent lesions, resistance to therapy, focal lash loss, and chronic presentation unresponsive to treatment 1, 6
Ocular adnexal lymphoma presents as painless, pink "salmon patch" lesions with indolent fleshy swelling 6

The American Academy of Ophthalmology recommends ruling out orbital cellulitis with examination for proptosis, painful eye movements, vision loss, fever 1
Fluorescein staining should be performed in every case to detect corneal involvement 2
Examination for vesicles or dermatomal rash suggesting HSV/VZV is crucial 5, 2
Discharge character should be assessed: watery (viral), purulent (bacterial), none (inflammatory/allergic) 3, 4
Umbilicated lesions on lid margins (molluscum) should be checked 5
Exposure history should be obtained: infected contacts, new cosmetics, medications, systemic illness 3
Biopsy should be considered if chronic (>4-6 weeks), unresponsive to treatment, or asymmetric presentation 6

For presumed viral conjunctivitis without red flags, cool compresses for symptomatic relief and mandatory follow-up in 3-4 days are recommended 2
Immediate ophthalmology referral is required for any visual changes, moderate to severe pain, corneal involvement, or suspected HSV/VZV 2
For suspected preseptal cellulitis, high-dose amoxicillin-clavulanate with daily follow-up until definite improvement, and hospitalization for IV antibiotics if no improvement in 24-48 hours or progressive infection are recommended 1