Just back from the vet. Happily Charlie's ears are fine. Vet thinks it could be that now he is being well looked after his fur is getting thicker and he may be hot or his collar might be irritating him. She said he is looking wonderful and is impressed with the behavioural turnaround achieved by the Zylkene and my treatment programme. On the downside he is putting on weight still and needs to have his food cut back. My life will not be worth living!!! Thanks all for your good wishes, it means a lot.