Old Fistula

My fistula surgery was in early 2020 so I have had it for about two and a half years. There are a few photos in earlier posts when it was in use, but I have not used it since the transplant surgery twenty months ago. This is what it looks like now:

The bumps disappeared quickly, and all that is visible is some discoloration at the three needle insertion points. The fistula is still working fine as you can still hear and feel the high-pressure blood rushing through the vein.

There have been some changes recently, however. I often feel a slight burning sensation in my forearm near the fistula. At the same time, I also feel an increased numbness in my right hand. I often feel cold or numb in my right hand while using the fistula since it diverts a portion of the arterial blood flow into the surface vein, bypassing the hand. This is the first time it has been noticeable post-transplant.