Hi ,my dad has undergone a laproscopic operation to remove gallstones and he had d side tubes connected for a month and he is diabetic.after 1 month bile liquid was coming upto 5 ml for once in 3 days ,d doctor checked n removed tube saying tat liquid in d tube is only coming bit by bit .after 4 days my dad had swells on his hand n now his right hand is swelled n has got blisters ,wat would b d reason for d swell n blisters on his hand