My Daughter Was Dignosed With Glandalur Fever After Being Goven

My daughter was dignosed with glandalur fever after being goven two lots of antibotics. Her glandalur fever seems to be completely over - gland back to normal and throat good (11 days in total). But she has an all over body rash - doctor said a allegic reaction and prescribed telfast - NOT WORKING!!!!!!! Went to hospital on Tuesday night - now Friday rash show no signs of going away. There must be something that can help her.