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Rheumatic fever is a rare disease. It usually doesn’t happen in the United States. It’s tied to the bacteria that…
Fifth disease is a mild viral infection caused by human parvovirus B19. About half of people get fifth disease sometime…
Cytomegalovirus (CMV) is a common virus that most people are exposed to as infants. It rarely causes symptoms, but sometimes…
H1N1 influenza is a viral infection. It’s not the same as seasonal flu (influenza). The first outbreak occurred in 2009…
Cold and flu season begins in the fall and continues through spring. Both conditions are contagious. But you can help…
A peritonsillar abscess is a puss-filled sore near the back of your throat and tonsils. It is filled with…
Reflux is a medical condition that happens when the acid in your stomach backs up to your throat. It causes…
Learn what may be causing your sore throat, and what you can do about it.
Adenoids are tiny pieces of tissue at the back of your throat. They help children’s bodies fight infection by catching…
Tonsillitis is an inflammatory disease that occurs when your tonsils become infected by a virus or bacteria.
Visit our interactive symptom checker