Thank you. I found some info which was helpful. Sadly, I have not had a good experience with the botox injection. I know some people have and others have felt nothing but this definitely created a lot of muscle tension which is contributing to more pain. Injection was into scalene and pec minor, both sides. My neck feels ok and getting better. But I have pain in the pec minor now, and back rear shoulder, and left trap. Its only been a few days but pain is not changing or improving.

The hospital says this should pass and I want to believe them, but also concerned this made things worse and will have to deal with this for 3-4 months until it wears off.

I would advise anyone to think about their symptoms before trying this. There is a chance it could make things worse.