What does the diffuse mean in arthralgias?

Major and minor jts.: Arthralgias means pain without obvious swellin of the involved joints.Arthitis is both pain as well as inflammatory swelling of joints. Diffuse arthralgias include pain from major joints like shoulder, elbow, wrist, hip, knee, ankle joints involvement as well as minor joints like finger joints, toe joints, foot joints, spine joints involvement and causing pain in those regions. Rheumatic fever has both.