I also have the ridges or grooves in both toes and fingernails. However, I do not have swelling or color change.
When I was examined thoroughly by a top RSD specialist he noted that immediately and attributed it to an RSD diagnois. That was one of the criteria for RSD. He diagnosed me with full body RSD and I am on the wait list for IV Ketamine. Just thought I'd pass that info on to you.
Best wishes,
Sydney