Template:Periorbital swelling DDX

Proptosis

1. Normal IOP
   1. Orbital cellulitis
   2. Pseudotumor
   3. Orbital tumor
2. Increased IOP
   1. Retrobulbar abscess
   2. Retrobulbar emphysema
   3. Orbital hematoma
   4. Orbital tumor

No proptosis

• Periorbital cellulitis/erysipelas
• Dacryocystitis (lacrimal duct)
• Dacryocele
• Dacryostenosis
• Dacryoadenitis
• Allergic reaction
• Nephrotic Syndrome (pediatrics)

Lid Complications

1. Blepharitis (crusts)
2. Chalazion (meibomian gland)
3. Stye (Hordeolum) (eyelash folicle)

Other

1. Subperiosteal abscess
2. Orbital abscess
3. Cavernous sinus thrombosis
4. Conjunctivitis
5. Contact dermatitis
6. Herpes zoster
7. Herpes simplex