My TB/Dutch WB mare has several bumps on her back in the saddle/saddle pad region. The bumps are about 1cm - 2cm wide ,and maybe 1/2 cm high. I think they are hives, but I am not sure what could have caused them, and what I can do about it? What are hives exactly?
I just bought her 2 weeks ago, so could a new environment have affected her??