Get Your Dog Care Questions Answered by Experts
I am sorry to hear you are worried about Peanut. I am a veterinarian and will do my best to help.
If she has had these swellings for 3 months, I would find out what they are. If she were my own dog, I would do FNA, fine needle aspiration of the swellings. That involves putting a small needle into them, and then squirting the contents of the needle onto a glass slide, to be examined under a microscope. These could be lymph nodes, infection, fat pads, and since she is young they probably are not serious, but that is the best way to find out what they are and if any treatment is needed.
They could be enlarged lymph nodes, related to her itch/allergy/rash. You can apply a topical steroid to a rash, like Cortaid or Cortizone 10. You can give Benadryl for itching, one milligram per pound of body weight ( 25 mg per 25 pounds) 2 to 3 times daily.
Let me know what other questions you have. Rebecca