My Janie is also an over-groomer; she has licked all the fur off her tummy and parts of her legs.

There is an article in the March Cat Fancy magazine about using flower essences on cats. They recommend crab apple to treat obsessive cleanliness and compulsive behaviors such as excessive grooming. However, I found the directions on how to administer the flower essences to be vague. "To apply, drop the essence on your cat's tongue." Then "..it's important to dilute the essences in spring water." So, if you dilute the flower essence, the cat would have to take a greater quantity to get the full dose? If I put it in the water dish there is no guarantee that Janie would drink it.

I hope you get treatment that works for your kitty. Let us know what happens.