Final answer:
The symptoms described suggest a possible diagnosis of Rheumatic Fever, which is an inflammatory disease that can affect the heart, joints, and skin. Treatment involves antibiotics and anti-inflammatory medications, and complications can include rheumatic heart disease.
Step-by-step explanation:
The symptoms described in the question, including vague chest pain, pain in several different joints, and a rash, along with an elevated ESR and prolongation of the PR interval on an EKG, suggest a possible diagnosis of Rheumatic Fever. Rheumatic Fever is an inflammatory disease that can develop after an infection with Streptococcus pyogenes (the bacteria that causes strep throat) and can affect the heart, joints, and skin. Treatment for Rheumatic Fever typically involves antibiotics to treat the underlying infection, as well as anti-inflammatory medications to reduce inflammation. Complications of Rheumatic Fever can include damage to the heart valves, leading to rheumatic heart disease.