So my horse seems to have some sort of back problem... he is very sensitive to touch around his loin region on his back. When I run my fingers down his spine he has the normal reaction 'spina prominens reflex' where he curves his back away from the pressure, however he also flinches away when I brush him sometimes. When I first saddle him up he does this strange thing where he dips his back away from the pressure of the saddle. Also when I first start riding him he is ususally a bit humpy... but not always.
His saddle was made for him and professionally fitted and I have had him checked out by a chiropractor who said there was nothing wrong with him. I then had him looked at by a massuese who thought that it was due to him tying up, he reccommended I change his diet to no grain/sugar/starch and add bi-carb soda to his feed to disolve any risidual. However none of this has worked. I changed his diet and religiously added Bi-Carb to his feed for ages but didn't notice a difference. He still dips his back away and is humpy to ride at first... sometimes- it's not every time I saddle up or ride.
I'm just wondering if he has maybe a 'cold' back? If I am doing damage by riding him when he's like this, even though he always warms up out of it?