Back Pain Tips

Can worker comp refuse treatment of a on the job injury if you refuse to sign a medical release of prior medical history. My back injury has nothing to do with any other medical problem I’ve ever had. My prior medical history is all in the military. I’m a disable veteran but injury is not related in any way to my back. Oh, I never mention I was a disabled veteran when applying for my job due to not wanting them to us it against me/ not hire me. We now have a new director of my agency and immediately started digging for information on me found out that I was disabled and reported to workers comp. Now worker comp won’t treat me without me signing a medical release. Is this legal? My real issue here is this is my personal records not just work records.