I am 36 years old female from bangalore. From 2 weeks im having allergic raised rashes. It itches a lot and wherever I scratch I get those raised rashes. I took allegra m 0-0-1 as prescribed by my doctor for 5 days but it is not helping. Those raised rashes are not red its just raised rashes and disappears after 20 mins or so and again I get it elsewhere in my body. I used to get these kinda rashes before only when I eat brinjal and soyameal. But used to vanish wih just one allegra tablet. So my question is, do I have to get a blood you test done? If so then what kind of blood test? Or do I have to get any other tests? Please suggest.