My wife has elevated liver enzymes , elevated BUN , had a liver, gallbladder ultrasound that was negative except for sludge in the gallbladder. She had a liver biopsy last week and we should have results this week. She is having severe itching, primarily on hands and feet, that is worse at night. Benadryl is not helping. What should she do for the itching? Bilirubin is not elevated.