My sb gelding has very little hair on the very top of his dock. He is driving me craaaazy, I can't seem to fix this! I have never caught him rubbing, but I am assuming this is the problem, as the hairs are broken like they are when rubbed out. He also has flaky skin around his anus, which consistently reappears. The problem seems to be worse at night time, which is why I thought sweet itch, as this is when the midgies come out, yet he doesn't rub his mane at all. It is worse if he is not rugged, at the moment it is just too hot even at night time. He is wormed every six weeks religiously and I rotate my worming compounds, so I am seriously doubting pin worms or related troubles. He is a picture of health and his coat is super glossy and sleek, and his mane is wonderful, just this dock problem. His tail is washed every couple of weeks and his sheet is kept clean, so not from that. The vet thought perhaps a dermatitis, wasn't sure. His diet is balanced and he is fed oils. Any thoughts? I would like him to have an entire tail for next season!