When we tested her thyroid, I insisted upon the full panel - not just T4 or TSH. Since I have Hashimoto's Thyroiditis, that's 1 area about which I know something. And usually, it's under-diagnosed. But her panel was well within normal limits.
OCD? That's what I'm thinking. But I don't know how to fix it. Meds would not be my first choice. Some homemade remedy to keep her teeth away from her rear paws would be splendid.