Pericarditis is swelling of the pericardium, the sack-like membrane that contains the heart. Pericarditis can cause sharp pain in the chest. In most cases, pericarditis will pass without treatment. In ...

In the past few weeks, health authorities have identified an increase in reports of heart inflammation occurring in individuals who have received one of the mRNA COVID-19 vaccines in the United States ...

Pericarditis often causes sudden chest pain that is sharp or stabbing. It can be mistaken for a heart attack. It also can mimic a lung condition. Carly Pearce vividly remembers the intense chest pain.