I've had itchy raised skin since monday all over my body. I went to the docs yesterday and she said it was hives although i have no idea why I have them as nothing has changed in my diet or washing powders. It's extremely itchy and I have not slept much even though I am taking prescribed antihistamine. Does anyone know how long this will last for? The itching is unbearable and it the rash seems to be moving around my body. My wrists are all swollen as are my feet and my back is just covered. Feel like I am in a nightmare!