Final answer:
The most common treatment for idiopathic or acute viral pericarditis is NSAIDs, but long-term use can lead to serious side effects.
Step-by-step explanation:
The treatment for idiopathic or acute virus pericarditis is often NSAIDs (Nonsteroidal anti-inflammatory drugs). NSAIDs, such as aspirin, are used to reduce pain, decrease fever, and alleviate inflammation. However, there are potential undesirable consequences of taking anti-inflammatory drugs on a regular basis, including an increased risk of gastrointestinal ulcers and bleeds, heart attack, and kidney disease. In cases where pericarditis is caused by bacterial infection, antibiotics may be prescribed. It is important to note that corticosteroids may be used in some autoimmune conditions to down-regulate the inflammatory response.