I have been riding my horse Rhiszo, haven't done anything to strenious with him, just slowly getting him back in shape again, and yesterday I noticed he has a somewhat hard bump on his back before his back hips but after where the saddle lays'. I put my fingers on either side of his vertebrae, and his fine till you go over that slightly swollen point, I can see that he is stiff on his back end due to that small lump, he is only 5 years old and a very healthy horse, but I was wondering if anyone might know what this is, and I'm wondering if I should put absorabene for horses over it, haven't put anything on it yet because I don't know what it is, and I don't want to put the wrong thing over it.
Any suggestions or help, i'm not going to ride him again till he is healed.
Do you think its something that might have strained when he was doing an extended loap?