Clinical manifestations of gallbladder stones: 1. Patients often experience abdominal pain after a full meal or when eating greasy food. 2. Patients may experience upper abdominal pain, bloating, belching, and regurgitation after consuming a high-fat diet in excess, or during periods of stress or poor rest. These symptoms are often misdiagnosed as stomach disorders. When gallstones chronically press against and block the gallbladder ducts without causing an infection, the gallbladder mucosa absorbs bile pigments and secretes mucinous substances, leading to the accumulation of fluid in the gallbladder. This fluid is usually clear and colorless, commonly referred to as white bile.