An abscess is a collection of pus in any part of the body. There are two different types of abscesses: skin abscesses and internal abscesses. Skin abscesses (cutaneous abscesses) develop under the skin. They are common and typically easy to treat. Internal abscesses develop inside an organ or in the spaces between organs and can be more difficult to identify than skin abscesses. The symptoms can be vague and there may be no obvious external signs of a problem. This book provides a comprehensive review of the different types of abscesses along with their causes and treatments.