[Answered]: Cause A. infection, autoimmune disorders, inflammatio

Cause A. infection, autoimmune disorders, inflammation after a heart attack, or a chest injury. B. coronary artery disease C. Viral, Bacterial infection, or Fungal infection. D. Medications like ephedrine, Smoking tobacco., Exposure to cold. Stress or Exercise. E. high levels of cholesterol and/or triglyceride in the blood, high blood pressure, poor diet, a sedentary lifestyle and/or diabetes. F. Atherosclerosis from blood clots or plaque