<prompt> Answer this question truthfullyWhat is the JONES criteria used for in relation to Rheumatic Fever?  <response>: <reason> The JONES criteria is used to diagnose Rheumatic Fever. J stands for Joints - migratory polyarthritis, O stands for - carditis endocarditis, myocarditis, pericarditis, N stands for Subcutaneous Nodules forearms, elbows, knees, E stands for Erythema marginatum rash w thick red borders, and S stands for Sydenhams chorea rapid movement, esp. of hands and face. 