Inflammatory pericardial syndrome to be diagnosed with at least 2 of the 4 following criteria:

1) Pericarditic chest pain

2) Pericardial rubs

3) New widespread ST-elevation or PR depression on ECG

4) Pericardial effusion (new or worsening)

Additional supporting findings:

- Elevation of markers of inflammation (C-reactive protein, erythrocyte sedimentation rate, and white blood cell count)

- Evidence of pericardial inflammation by an imaging technique (CT, CMR)