Angina (ischemic chest pain) is often a symptom of heart disease that occurs when your heart doesn't get enough oxygen and blood to function.| Health
Coronary artery disease is the most common type of heart disease, which causes symptoms such as chest pain, shortness of breath, and fatigue.| Health
Hypokalemia, or low potassium, causes symptoms like muscle weakness or cramps, fatigue, constipation, irregular heart rhythms, and palpitations.| Health