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What is rheumatic fever?

Rheumatic fever is a sickness that happens in some people after they have a Streptococcal (strep) germ. This germ causes sore throats and skin sores. Sometimes, after causing a sore throat, the strep germ can cause the body's germ defence system (immune system) to start attacking your joints, heart, brain and skin - this is called rheumatic fever.

Healthcare professionals often call this ARF, which stands for acute rheumatic fever. When someone has ARF, this can cause fevers, pain, and swelling in the joints. Sometimes, it can hurt so much that it is difficult to move or walk. 

Your team of healthcare professionals will have done a number of tests to diagnose rheumatic fever. These include:

  • blood tests
  • swabbing your throat to see if you still have the strep germ
  • a special heart scan called an echocardiogram to see if your heart has been damaged by ARF
Comic about someone with a sore throat being advised to go to the doctors to check for strep throat
Comic about someone with a sore throat getting checked for rheumatic fever
Comic about someone with a sore throat getting checked for rheumatic fever
Acknowledgements

This information is adapted from the rheumatic fever and rheumatic heart disease booklet produced by the Rheumatic Fever Project Team, Te Whatu Ora - Counties Manukau, 2022.

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