I don't know much about this but since you mentioned itching I'm wondering if you have an allergic reaction causing some swelling and nerve compression?

I haven't been able to find definitive info but I seem to be having something like that from my inhaled steroid....swelling causing entrapment symptoms. I thought it was tendons but one article I read mentioned muscle swelling. I know I have that in my arms and am beginning to wonder if it is also present in my legs.

I get the sharp pain in my little finger as well and itchiness. I wonder if you had an allergic reaction to something on your hike or if you are having a med issue. Is itchiness a SE of coumadin?

I have a Baker's Cyst but it doesn't do much anymore.

Hope you find some resolution, as I said, I don't know if my experience is applicable.

Judi