A 6-year-old client presents with polyarthritis, and the parents report no medical history except for a sore throat 4 weeks ago. On physical examination, a murmur is noted. Which diagnosis is supported by the assessment data?

A. acute rheumatic fever

B. caditis

C. Rheumatoid arthritis

D. Arthritis

E. Reiter syndrome

A. Acute rheumatic fever.

Explanation:

Acute rheumatic fever is an autoimmune response to the infection of bacteria called group A streptococcus. This infection commonly occurs in children and particularly after 2 to 3 weeks of pharyngitis or sore throat. It has manifestations of cardiac (murmur), rheumatologic, and neurologic.

So, the above symptoms shown in question is purely related to acute rheumatic fever.