Chest flashing pain is usually referred to as stabbing pain, which may be related to cardiac neurosis, pleurisy, intercostal neuralgia and so on. 1. Cardiac neurosis: it is mostly caused by long-term mental stress, heredity, environment and other factors. The pain is mostly pin-prick or knife-like, and can radiate to the back of the chest. 2. Pleurisy: Inflammation of the pleura caused by microbial infection, tumor, connective tissue disease and so on. When the pleura is stimulated by inflammation, there will be obvious pain on both sides of the forehead, mostly stabbing pain, pulling pain and so on. 3. Intercostal neuralgia: it may be related to tumor, herpes zoster, or spinal degenerative diseases, pleural lesions. Most of the pain is pins and needles, burning pain. Chest flash pain can also be seen in other causes, it is recommended to consult a doctor in a timely manner, follow the doctor’s instructions for relevant examinations, with the help of the doctor to clarify the cause, and targeted treatment or therapy.