Stiffness in the middle of the top of the stomach requires vigilance against acute gastritis, pancreatitis, gallbladder and other diseases. The main organs in the middle part of the stomach are the stomach, pancreas and gallbladder. When stiffness occurs in this area, you need to be alert to diseases caused by these organs. Firstly, when there is an attack of acute gastritis, the stomach will be spasmed and contracted by inflammatory stimulation, and then a hard mass will form in the stomach, so you can feel a relatively hard phenomenon above the stomach. Secondly, pancreatitis is caused by poor drainage of pancreatic fluid and self-digestion of the pancreas. During an attack of pancreatitis, the pancreatic organ will swell due to infection, and the patient will not only experience stiffness in the middle of the stomach, but also severe pain, which in some cases will radiate to the back and shoulders. Finally, the attack of cholecystitis will cause some invasion of the surrounding organs, because the bile can not be excreted, the patient will be accompanied by indigestion, the patient will also have a hardness in the upper part of the stomach during the attack of cholecystitis.