Pink eye, also known as conjunctivitis, is a common condition that can spread easily, especially among children in schools, daycares, and other group settings. If your child, or someone in your household, has recently been around someone with pink eye, you may be wondering how long it will take before symptoms appear. The answer depends on what caused the pink eye. Viral and bacterial conjunctivitis are contagious and can spread from person to person, while ...