A bout of stabbing pain in the left chest may be an adverse symptom caused by coronary heart disease, or discomfort caused by intercostal neuritis, pleurisy, breast hyperplasia and other diseases. 1. Coronary heart disease: coronary heart disease may cause a burst of stabbing pain in the left chest, usually the patient will appear chest tightness and shortness of breath, panic, angina and other adverse symptoms, emotional fluctuations or excessive fatigue after the disease will be more intense. 2. Intercostal neuritis: Intercostal neuritis will also appear this kind of discomfort, cold or overexertion will appear this kind of disease, deep breathing or violent coughing pain will be more obvious, press the affected area will appear strong pain, some patients will be accompanied by fever symptoms. 3. Pleurisy: pleurisy will lead to paroxysmal stabbing pain in the left chest, the pain will be more intense when breathing or sneezing, the patient will also have coughing, chest tightness and other undesirable symptoms, some patients will have difficulty breathing. 4. Breast hyperplasia: a burst of tingling in the left chest may also be suffering from discomfort caused by breast hyperplasia, and nipple overflow will occur. There may be obvious nodules or lumps when touching the breast, and the discomfort will be stronger during a woman’s menstrual period. There may be other reasons for this type of discomfort, so you should seek medical attention to determine the cause of the condition and treat it aggressively to avoid delaying the condition.