I have a patient who is 19 year old discharged from the hospital after getting treated (treated elsewhere) for Dengue. She has now developed generalised itching without rashes. Her platelet count yesterday was 73000. Itching is not subsiding with Levocet.

Can I prescribe tab. Allegra 120 mg? Her BP is 80/64 mg. Does allegra induce fever like or flu like symptoms?