Hi Dr Jean, I'm sorry if this is a little long, but it has been worrying me for a while. I have a 2 year old grey cat called Archie who started changing colour on his ears about a month or 2 ago. He had random splotches of colour on his ears go pink and then skin colour pinky white. A little like an inverse dalmatian. We took him to the vet who said she had no idea what had caused it, but as his ears had seemed to be getting better, and he is otherwise fine that it was just 'one of those things'. Now although his ears are less starkly white than they were, its not getting any better, and you can clearly see the translucent splotches through his ears if you hold him up to the light. The pigment loss is also spreading to the area of skin between his ears and eyes. In the picture of him in my signature, the area where the light hits him just in front of the ears is almost the exact size and appearance of the splotches. The hair that grows from these patches is also either white or heavily flecked with white. The hair also seems more sparse, although its hard to tell if that is simply the placement in front of the ears, or the white skin showing through. I was wondering if he could have vitiligo, and if there is anything I can do to help him? Our other cat is in the pink of health, with no baldness/pigment loss whatsoever. I would be extremely grateful for any help you are able to give me.