This document provides information about conjunctivitis (inflammation of the conjunctiva). It discusses the types of conjunctivitis including bacterial, viral, allergic, and others. Bacterial conjunctivitis is the most common type and is usually caused by Staphylococcus aureus. It presents with redness, discharge, irritation and can spread between people. Treatment involves topical antibiotics. The document also covers specific types like acute bacterial, hyperacute, chronic bacterial, and ophthalmia neonatorum conjunctivitis. Chlamydial conjunctivitis including trachoma is also described.