Sudden generalized yellowing may be due to the following causes: 1, acute viral hepatitis, such as infection with hepatitis A, hepatitis E, EBV, cytomegalovirus, etc. causing acute hepatitis manifestations, there will be a generalized yellowing of the skin and sclera. 2, there may be acute hemolytic jaundice caused by eating certain foods, for example, some patients oral fava beans appear fava bean yellow, or take certain drugs caused by red blood cell destruction, this 3, bile duct obstruction, some people may be due to cholecystitis, cholelithiasis, stone obstruction of the bile duct and cause poor bile excretion obstructive jaundice.