The abscess are formed in response to infection. It can be inside skin or on the skin. The sack formation take place when the abscess is on the skin. All abscess contain pus and infected material. To treat this, drain of pus and infected material is necessary. Some time abscess or boils have their openings to drain pus and sometimes it require minor incision. The sacks are removed only when the abscess has no openings. After drainage of pus, antibiotics are used.