It May Be Caused by an Allergy
Even though the majority of pinkeye cases are due to either bacteria or a virus, this is not always the case. Allergic reactions can actually lead to pinkeye. Luckily, this type of pinkeye is not contagious. The most common allergies associated with pinkeye include hay fever, animal dander, and dust mites. The fourth cause of pinkeye is external factors that irritate the eye. For instance, some individuals develop pinkeye after being in a heavily polluted area or after going for a swim in a pool that has been treated with chlorine. This is one reason that we suggest leaving it up to the professionals to diagnose since one type of pinkeye will not respond to treatment for another.