CRP and pericarditis: Thediagnostic criteria for pericarditis based on guidelines include at least 2 outof the 4 criteria of (1) pericarditis chest pain, (2) pericardial rub on physicalexamination, (3) new ECG changes (widespread ST-elevation or PR depression) andnew or worsening pericardial effusion; while other supporting features includeelevated inflammatory markers (such as C-reactive protein, sedimentation rate andwhite cell count), and imaging evidence of pericardial inflammation (especiallyby MRI, Fig. 1) [1].