Hi My Daughter Was Bitten By Several Mosquitos About A

Hi my daughter was bitten by several mosquitos about a week ago. She mentioned she had a fever and she wasn't feeling well. I told her to take benadryl. Today she mentioned that her left leg felt numb. Also, the mosquito bites caused a huge rash on both of her legs. Is this a reaction to the mosquito bite. Do I have to worry about her leg?