new pain in one hand – what could it be?

I never had any pain associated with GBS (i guess I am one of the lucky ones) and apart from occasional painless “zings” in my left hand, have not had any ongoing residuals (apart from the usual fatigue).

Over the last few weeks I developed a constant ache in my left index finger that has progressed to my wrist/hand. My GBS did start in my hands but progressed very quickly and both sides were affected, so I am not overly concerned that it is a relapse.

As i never had pain while i was suffering GBS, I dont know if this is the same kind of pain or why i would suddenly get it now (i am still only 8 months post GBS but have been symptom free for quite a few months)

Just wondering if anyone has had problems with painful hands (seems to me to be in the joints?) or ideas on what it could be?