Inflammation of eyelids
Acute (ulcerative or nonulcerative)
Usually bacterial (typically staph), less often viral (VZV, herpes)
Chronic (meibomian gland dysfunction, seborrheic<unk> 
Usually bacterial (typically staph), less often viral (VZV, herpes)
Blepharitis
Normal IOP
Periorbital cellulitis
Orbital cellulitis
Facial cellulitis
Orbital pseudotumor
Orbital tumor
Sympathetic ophthalmia