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 a swelling of the pericardium, a sack-like tissue that contains the heart. Pericarditis can have a number of causes, including bacterial or viral infection, parasites or fungus. Most commonly, pericarditis is due to a virus. In general, pericarditis will disappear on its own without treatment. Symptoms of pericarditis include palpitations, a dry cough and pain in the shoulder.