Strep throat should be diagnosed as quickly as possible because of the serious complications that can develop if left untreated. These include rheumatic fever
, which can damage
the heart, and acute nephritis, which can damage
the kidneys; both can be fatal.
The onset of strep throat is characterised by sudden high fever and a severe sore throat.
The bacterium responsible for scarlet fever, a strep-related illness, can also cause pharyngitis.