Hello! I'm new around here. I recently got a dog from an individual about a weeks go. She has since picked up fleas and immediately got her on a flea/tick preventive (NexGaurd as recommended by the vet) and can tell it has helped tremendously as fleas started coming out of her fur soon after giving the preventive, which I took her outside and picked all off of her as they surfaced. I still notice some on her here and there, but she seems very itchy, way more than what I think she should be. Her skin has definitely improved from before the preventive, her skin was very red from scratching so much from the fleas, and it's now back to the color it should be. However, I have noticed that there's a couple places on her legs she's been chewing at that are about raw. What can I do to help with the itching and to put on those spots to help them heal?