Rheumatic fever is an inflammatory immune disease that develops from a bacterial infection in the throat or skin called streptococcal, which also causes strep throat and scarlet fever. It affects mostly children and affects the heart, joints, skin, blood vessels and brain. Symptoms occur two to three weeks after the infection, and include joint swelling, redness, and spasms in the elbows and knees. Other symptoms are skin nodules, pain, redness or heat in the joints, fever, weight loss, tiredness and stomach pain. Treatment consists of resting and administration of anti-inflammatories and antibiotics.