Causes of Myocarditis
In many cases, the exact causes of myocarditis remain unknown. When a cause is found, it is often related to an infection that affects the heart muscles. A viral infection is the most common trigger, but other forms like fungal, parasitic, or bacterial can also be the culprit. When an infection occurs, the body will activate the immune system to fight back. This leads to an inflammatory response that would weaken your heart muscle tissue. Certain autoimmune diseases like rheumatoid arthritis or lupus could also cause similar effects. [3]
