Occasional twitching of the heart usually has the following factors: 1. Patients with cardiac neurosis will have symptoms and reactions of occasional twitching of the heart when they are consciously aware of it in the presence of vegetative nerve dysfunction. 2. Organic diseases of the heart will also show the above symptoms, such as unstable angina pectoris in coronary atherosclerotic heart disease, myocarditis, pericarditis, heart valve disease, pulmonary heart disease, hypertensive heart disease 3. Endocrine metabolic diseases, such as hyperthyroidism, will cause cardiac tamponade due to arrhythmia and tachycardia.