Characterized by pink coloration in the infected eye (sometimes one or both), conjunctivitis is the inflammation of the conjunctiva (underside of the eyelid and surface of the eye). It also causes excessive tearing and irritation. Viruses, bacteria, and allergies can cause different types of conjunctivitis. Bacterial infections often also lead to yellow or greenish discharge and require antibiotics for treatment. Viral conjunctivitis, like the common cold, is highly contagious and will clear up on its own. Pinkeye, a common term for Conjunctivitis, is most prominent in children: learn more about Kids and Conjunctivitis.

Allergic Conjunctivitis – this form of Pinkeye is not caused by a bacterial or fungal infection of the eye, but by allergies. Allergic Conjunctivitis is not contagious, so children don’t need to miss school for fear of contamination. It can easily be treated with antihistamines.