Complaint of "red eye" with mild-moderate, watery discharge
Usually painless unless there is some degree of keratitis
Often one eye will be involved initially with other eye involved within days
Unilateral or bilateral conjunctival injection with perilimbal sparing
Chemosis and subconjunctival hemorrhages may be present
Preauricular lymphadenitis (adenovirus)
Viral conjunctivitis
Bacterial conjunctivitis
Epidemic keratoconjunctivitis
Allergic conjunctivitis
Herpes zoster ophthalmicus
Chlamydia conjunctivitis
Herpes simplex keratitis
Gonorrheal conjunctivitis