Have you taken her to see a vet? It could be allergies, it could be mange, or it could be related to other conditions. Sarcoptic mange is more prevalent this time of year as the fox move around and look for new territories (if you are in the country). It makes the dogs very itchy but is easy to cure with the advice of your vet and Revolution (the vet has to help you get the timing of the applications right).
Allergies are harder to deal with because it take much more effort to figure out what she is reacting to, and to heal her skin. The first step is to get her on a grain-free diet — and that includes all treats! Grains in her diet will slow down the process of dealing with allergies.
The only way to figure out what is going on with her is to see the vet.
To help with the itching try rinsing her with 1/3 vinegar & 2/3 water. Be sure it gets into her skin, and then allow it to dry. You can try witchhazel with aloe on the raw patches — pat it on with cotton and allow to dry.
And last of all, use the generic form of Zyrtec (not Benadryl) to help get her through a few days of itchiness.
PK
I have 3 Labs and 2 are young and all get very jealous when I pay the other one special attention. What I do is have my own special one on one time with one and then with the other one. One of my dogs love playing frisbee so I play that with that one by himself and the other one loves playing hide and go seek with treats so I play that with him. It’s just and idea but I hope it helps ?