What are the symptoms and causes of palpitations?

Palpitations symptoms include conscious heart rate acceleration, precordial discomfort, dizziness, etc. 1, conscious heart rate accelerated patients conscious heart rate accelerated, but sometimes heart rate is not abnormal, this symptom can be repeated, continuous attack, can last for a few seconds, minutes or even hours. 2. Patients with precordial discomfort often feel panic, chest tightness, chest tightness, etc., and symptoms often appear in quiet conditions at night. 3. Severe dizziness and palpitations can cause cardiac insufficiency, dizziness, and may be accompanied by pale face, sweating, shortness of breath. Palpitations may be caused by physiological factors, or may be related to anemia, cardiomyopathy, etc. 1. Physiological factors: strenuous exercise, excessive mental stress, frequent staying up late, less sleep time, poor sleep quality or drinking alcohol, drinking strong tea, drinking coffee, can lead to excessive heart activity, resulting in palpitations. 2. anemia. Reduced or insufficient red blood cell production, excessive red blood cell destruction and blood loss can cause anemia. Because red blood cell carries oxygen ability to reduce, patient toe ischemia anoxia, thus can appear palpitation phenomenon. 3, cardiomyopathy patient because virus infection, inflammation, immune function abnormality and other reasons cause cardiomyopathy, because congestive heart failure leads to myocardial ischemia, can cause palpitation phenomenon.