I have the same symptoms since last September, mainly in the little and ring finger, but I have tingling in the other fingers when bending my wrist, too. So the GP diagnosed me with Carpal Tunnel. Started to wear wrist support overnight, helped the tingling but made the bending worse. I never had any problem with human or analog insulin before (I am on Novorapid and Lantus just now.) Perhaps the GP has rushed my diagnosis a little bit. I gonna ask my diabetologist about it. Do you know if it’s a common side effect of human insulin?