Definitions
Pericarditis
Overview
Pericarditis may be caused by a viral infection or heart attack. In many cases, the cause is unknown.
Symptoms
The most common symptom is sharp, stabbing chest pain that may travel to the left shoulder and neck. Pericarditis usually begins suddenly but doesn't last long.
Treatments
Most cases are mild and usually improve on their own. Treatment for more-severe cases may include medications and, rarely, surgery.