Feel 100% ready to make that call knowing you've got a tool that will help you advocate for your client
One of the best things you could ever do for someone with CRPS is to help them get a diagnosis as soon as possible.
You don't know how many people I've met with CRPS who were tossed around the healthcare system (sometimes for years) before getting the diagnosis and help they needed.
Instead, you'll be the clinician confidently calling the referring physician and clearly stating that the person you are caring for needs further work up and help.