In psychology, stress is a feeling of strain and pressure. Small amounts of stress may be desired, beneficial, and even healthy. Positive stress helps improve athletic performance. It also plays a factor in motivation, adaptation, and reaction to the environment. Excessive amounts of stress, however, may lead to bodily harm. Stress can increase the risk of strokes, heart attacks, ulcers, dwarfism, and mental illnesses such as depression.
Myocarditis is inflammation/infection of the heart muscle. Pericarditis is inflammation the pericardium which is the sac surrounding the heart. Endocarditis refers to an infection of the heart valves. Myocarditis is inflammation/infection of the heart muscle. Pericarditis is inflammation the pericardium which is the sac surrounding the heart. In brief: Different structures. Endocarditis refers to an infection of the heart valves.  Pericarditis is inflammation the pericardium which is the sac surrounding the heart. In brief: Different structures. Endocarditis refers to an infection of the heart valves.
Pericarditis is swelling and irritation of the pericardium, which is the sac that surrounds your heart. Pericarditis usually doesn't cause serious problems. Most people get better in 7 to 10 days. When there are problems, they may include: 1  A buildup of fluid in the pericardial sac (pericardial effusion). 2  Sudden pressure on the heart and sudden difficulty pumping enough blood (called cardiac tamponade). 3  Constrictive pericarditis, which can occur when pericarditis comes back or becomes a longer-term problem.