What is the prevalence of idiopathic pericarditis?

Updated: Apr 02, 2019
  • Author: Sean Spangler, MD; Chief Editor: Terrence X O'Brien, MD, MS, FACC  more...
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Between 26% and 86% of cases of acute pericarditis are idiopathic in nature. [11] No clinical features distinguish idiopathic cases from viral pericarditis. It is likely that most idiopathic cases are undiagnosed viral infections. Seasonal peaks occur in spring and fall.

More recently, there has been evidence that the innate immune system and autoinflammation contribute to acute and recurrent pericarditis. [6, 7]

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