Most people who have their tonsil abscess treated quickly will recover well and will not develop an abscess again. However, some people may have complications. This is more likely in people with diabetes, lowered immune systems, and those who did not receive prompt medical attention. It is possible for the infection causing a tonsil abscess to spread further down into the respiratory tract. Complications can include bleeding, pneumonia, and meningitis. It is also possible to contract sepsis if the infection gets into the bloodstream.

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