What is the most common cause of conjunctivitis in children?

The most common cause of conjunctivitis in children is actually a viral infection. It accounts for the majority of cases, particularly due to viruses such as adenovirus, which is highly contagious and can spread easily among children in settings like schools and daycare. Viral conjunctivitis is often associated with other symptoms of upper respiratory infections.

While bacterial infections can cause conjunctivitis, they are less frequent in comparison to viral origins. Allergic reactions can also lead to conjunctivitis, especially in children with a history of allergies, but this type is generally seasonal and less common overall. Environmental irritants, such as smoke or chlorine, may trigger conjunctivitis, but they are not prevalent causes in the pediatric population when compared to viral and bacterial causes.

Therefore, understanding that viral infections are the leading cause highlights the significance of proper hygiene practices and awareness of how these infections spread among young children.