Horse Veterinary Questions? Ask an Equine Vet.
Good Morning and welcome! I am Dr. Loretta, a licensed veterinarian and I am happy to answer your question.
It is hard to know what may be causing this but if you are using some form of bit, try using a sidepull or hackamore to see if this will stop this from happening. Call the previous owner to see if there had been any problems prior to selling her. It sounds like the tongue, in some way, is losing blood supply possibly due to compression of a certian area by the headstall or something inside her mouth which , you would have to have your vet check. There may be scar tissue from an accident that would cause this compression causing this.Does that make sense to you?
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