I certainly hope there is no permanent damage. Time will tell. He also was fearful, no wonder, and growled constantly, even after he was fed (could not eat on his own his mouth was so traumatized) and left covered in a cage on a heating pad. Just kept growling. NO cat should have to go through this. We need a new way of looking at flea control. Poisoning the fleas and the cat is stupid. An ounce of prevention would be to keep the cat healthy (raw organic food maybe??) and the house clean. "they" are rushing to bring out new products since Advantage, etc., are no longer effective. He's eating like a champ now, and feeling more comfortable in his skin. Have been calling him B. B., not blues boy, but...that may change. He's gained 3 ounces.
Also in this post: Still life with Emma