What causes chest tightness?

Chest tightness is a common symptom that may be caused by various factors. Below are some common causes: 1. A manifestation of heart disease, such as myocardial ischemia caused by coronary artery atherosclerosis, or conditions like angina pectoris or myocardial infarction. 2. Related to the respiratory system, such as chronic obstructive pulmonary disease (COPD), asthma, pneumonia, or pulmonary embolism. Digestive system issues, such as gastroesophageal reflux disease (GERD), can also cause a feeling of chest tightness. 3. Anxiety, stress, or emotional problems may also lead to chest tightness. 4. In daily life, excessive fatigue, rapid changes in weather, smoking, or exposure to harmful chemical substances may temporarily cause chest tightness. Note: If chest tightness is accompanied by other symptoms such as chest pain, shortness of breath, sweating, or fainting, seek immediate medical attention.