Is this Mange or a skin problem?

I bought a rabbit from a pet shop (shadow) a few week's ago.
He was very timid and didn't seem 100% healthy, I was happy to remove him from that pet store (re known for dying animal's) but he has become ill.
When I returned to the pet shop I noticed all the other rabbit's in his cage were removed and taken away I asked about this and about the health of certain animal's to which the owner replied it is the breeder's that bring the animals in and not him so it isn't his fault.
Shadow is losing patch's of hair and is not shedding, this is not normal. He has a white dandruff like substance alongside the patch's. Any idea's thanks

[ireneo]

This doesn't look like any mange episodes I've dealt with. Is the rabbit licking or chewing the area often? It almost looks self-inflicted. Perhaps the bunny has a nerve irritation and licks and chews because of pain.

It sounds like he's having other symptoms so I'd recommend a trip to the vet. Rabbits can go downhill pretty quickly in terms of health. Hope you get some answers soon.

[Charmiiii]

No he isn't licking or chewing the area, he is just losing patch's of hair rather quickly and has a dandruff like substance around the outline.
Thank you

[ireneo]

Perhaps some kind of eczema then but cause unknown yet. Or alopecia which is a pretty random thing.

My bigger concern is that he seems to be acting ill. His fur will grow back but it would be a good idea to find out why he doesn't feel good.

The reason I asked if he was licking is because in the photo the fur looks wet and matted.