Pancreatitis undershirt pain healed and the symptoms of pain in the undershirt again is not necessarily a recurrence of pancreatitis. It may also be related to other digestive system diseases, respiratory system diseases and heart diseases. 1. Pancreatitis: After treatment, the symptoms of pain in the undershirt area will disappear. The recurrence of undershirt pain may be related to the recurrence of pancreatitis. 2. Other digestive diseases: diseases such as cholecystitis and reflux esophagitis can also cause pain in the undershirt area. 3. Respiratory diseases: diseases such as pneumonia and lung cancer can cause pain in the chest and undershirt area. 4. Heart disease: the symptoms of undershirt pain may also be related to pericarditis, myocarditis, coronary heart disease and other heart diseases. As the causes of this symptom are diverse, patients should pay attention to it and seek medical examination as early as possible to clarify the cause of the disease, so as to facilitate timely treatment of the cause.