"Purulent" refers to a type of fluid that contains pus, which is a thick, yellowish or greenish substance produced during inflammation or infection. Pus is made up of dead white blood cells, bacteria, and tissue debris. When a wound or infection becomes purulent, it often indicates that the body is fighting off an infection, and medical attention may be necessary. Common conditions associated with purulent fluid include abscesses, boils, and certain types of pneumonia. The presence of purulent discharge can be a sign of bacterial infection, and it is important to seek treatment to prevent complications. Proper diagnosis and management are essential for effective healing.