S.S.
I will let everyone else handle the medical question, but I was wondering if you by chance wear flip flops? I actually had something like this going on last year,went to the doctor thought I was having a stroke (or diabetes or heart problems, kidney failure, muscle lacerations, etc.) and discovered that I was wearing my flip flops so much that my toe was actually kind of set in a weird way and the rest of my foot legs were held rigid while I hung onto it as I walked. Good ending in my case, I bought different ones wear the material didn't go between my toes. A couple of months later I was good as new. Now I really hope it is that and not some medical condition, but I'll keep reading up on this. Good luck!!!