I was lucky that when I asked my PT what this was she said trigger finger and they had an OT who was also a lymphodema specialist (which I ended up needing there as well) that could handle it. She does ultrasound and tooling and gave me a splint to wear at night and at first a hard slip on finger splint that would help keep my finger from bending -- she eventually gave me a silicone finger cover which helps. As one was getting better another finger started triggering... so I'm currently treated for that. I hope you find a good OT.