Yes. I was diagnosed with Small Fiber Neuropathy last summer. I've had the foot cramping under control for most of the last year, but recently it has returned.

Possible causes (I'm guessing here):
-Diet (I'm eating a little less, skipping lunch)
-Exercise (knees have been bothering me, so no exercise for about a week)
-Summer Heat Increase
-L-Lysine (I've maintained all of my supplements except L-Lysine, but I looked it up and I don't think L-Lysine has much to do with cramping)