In order to make a diagnosis, the doctor should ask a few questions (record the medical history) first, and then have a physical examination. Tests are usually conducted to confirm the diagnosis, determine the severity of the disease or make a treatment plan.
However, even if it is a serious heart disease, it will not appear until the disease develops to an advanced stage. This asymptomatic heart disease may be found during routine examination (for example, before examination) or during medical treatment for other reasons.
No specific symptom can simply indicate heart disease.
Symptoms of heart disease include certain types of pain, shortness of breath, fatigue, slight feelings in the heart and head, and syncope. However, these symptoms do not necessarily indicate heart disease. For example, chest pain (angina pectoris) may indicate heart disease, but it may also indicate respiratory or gastrointestinal diseases.
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When the blood of muscles is insufficient (a state called ischemia), spasms will occur due to hypoxia and waste accumulation. If the myocardium doesn't get enough blood, the patient's chest will feel squeezed and compressed, which is called angina pectoris. However, the nature and severity of pain vary from person to person. Sometimes people with insufficient blood supply have no pain at all (this is called asymptomatic or silent ischemia).
If other muscles (especially calf muscles) don't get enough blood, patients usually feel compressive fatigue and pain during physical activity (line C). Pericarditis, inflammation, or pericardial injury may cause pain. If the patient lies down, his condition will get worse, but if he sits up or bends forward, his condition will get worse. Pain does not increase with exercise. When inhaling or exhaling, the pain may increase, because this condition may be accompanied by pleurisy (inflammation of lung membrane).