Poor little Poppy - hope she is ok now. I give my Bobbie a Piriton tablet every day as he seems to be prone to allergies. Vet said it was ok even though they are for humans, but I would be careful as Poppy is so young, may not be good for her at the moment. Another thing for soothing the skin I have found is Aloe Vera products which can be used on animals as well as humans.