Scooting Dog

Missy, 11yr pomeranian, has scooted since being spayed. Anal glands removed. No worms. Taking 12.5 Benadryl at nite and am. Special hypoallergic food. Bath once a week with special shampoo and conditioners. Missy is going crazy crys and yips at you for help as she scoots her bottom. We have even started Benadryl cream to help. I came here to maybe find an answer. Missy has been to the vet repeatedly over the last year and nothing seems to help. If anyone has similiar symptoms and any suggestions please email me at TireDogs@aol.com.
Thank you.

My Pomeranian began to scoot around in circles, and we took her to the vet and her anal glands were fine, but her "wee wee" area was all raw and inflamed looking.
They gave us antibacteril ointment to put on and that seemed to make it worse. We then took her to another vet who thought that as she was overweight, which caused that area to be somewhat "recessed" so that it would get wet and then not dry out, that it was a fungal infection.
So, on to Jock Itch cream and antifungal powder.
Still, it looks sore and just won't seem to stop being inflamed. We feel so bad for her, but after two vets now, we are at our wits end. I am seriously cutting back on her food to see if simply slimming her down may be the "fix".
It makes me feel like an awful owner to have her so sore and not be able to give her relief.