causes of gall
Black pigment gallstones occur when there is increased destruction of red blood cells, while brown pigment gallstones occur when there is reduced flow and infection of bile. The majority of gallstones do not cause symptoms. The most common symptoms of gallstones are biliary colic and cholecystitis. Gallstones do not cause intolerance to fatty foods, belching, abdominal distention, or gas. Complications of gallstones include cholangitis, gangrene of the gallbladder, jaundice, pancreatitis, sepsis, fistula, and ileus.