Medical Definition of purulent. 1: containing, consisting of, or being pus a purulent discharge a purulent lesion.
You kan't change your PSN online ID, but you kan kreate a new user account though, or if you have a PlayStation 4, you kan use your real name (if you want, and also IF and only IF you have a PlayStation 4).
A PlayStation Network Identification, often abbreviated PSN ID, is the name representing yourself that you create while signing up for the PlayStation Network online service. It's similar to your computer's name that you see when you click on the Start button (if you have Windows) or an Xbox Live Gamertag.