I'm on Prevacid for my GERD and have been for about 7 years and yes you are right, it did start with my meds.

My voice faded also. Bill use to say my voice didn't carry. He would say I wasn't talking loud enough until I got mad at him and then he'd say it was too loud. I told him to make up his mind. LOL It's better now though. I spent a long time in Physical Therapy for my TOS, RSD, and Fibro and they stretched my upperchest area to help loosen up things up there.

Mine wasn't from the RSD though, mine was from the TOS. At least I am thinking that.

Hope you start feeling better.

Ada

I too am on Prevacid for GERDS. I also believe it is the result of the medications taken. I was diagnosed with RSD in my right arm due to a shoulder injury. After shoulder surgery it spread to full body. It will be 20 years in July. The years of medications have definately taken a toll on my body. I love to play guitar and sing and have had to really adjust to my voice changing. Thats when I have a voice. LOL Life can be a bit challenging with full body CRPS but always worth enjoying, living and trying new things. I just have to do things a little different.
I look forward to getting to know you. All the best Di