http://www.ozemedicine.com/wiki/doku.php?id=joint_swelling
Joint swelling overview
http://lifeinthefastlane.com/resources/arthritis-ddx/
Arthritis
http://journals.lww.com/em-news/Fulltext/2009/09000/Symptoms__Joint_Swelling_and_Pain,_Fever.28.aspx
case