My two year old has a itchy rash in the left side of her body, which started on her left knee, arm pit, and inside if left elbow, now spreading up the left side of her body. It seemed to start right after or during a small virus she had about two weeks ago. Seems to be getting worse. She has had NO allergic reactions up to thsi point in her life, and has consumed milk, nuts, fruits, veggies, meats, with no issues previously. Any opinions, insights??