The progression of an abcess are the classic signs of inflammation. Tumor, reddness, warmt and pain. When it gets really bad, youll have a fever and symptoms of other complications from an abcess such as sepsis, infectious endocarditisis, etc. Its like the worst zit youll ever have. I dont think youll find any progression pictures because its usually too late and too far into the course of the disease until the person does anything about it.