This document provides information on acute rheumatic fever. It defines rheumatic fever as an autoimmune condition that can occur weeks after a streptococcal throat infection. It affects children aged 5-15 and can cause arthritis, carditis, chorea, erythema marginatum, and subcutaneous nodules. Carditis is the most serious manifestation, often resulting in long term rheumatic heart disease. The document reviews the epidemiology, etiology, pathogenesis, clinical manifestations, diagnosis according to the revised Jones criteria, and long term sequelae including rheumatic heart disease.