Does anyone suffer from random hand cramping and finger contractures?

I am at wit’s end with a problem I’ve been having with my hands and fingers. My hands randomly have spasms and my fingers randomly contract. In particular, the fingers that contract are my index finger in my middle finger and occasionally my thumb. My fingers curl inward towards my palm and will not release for a few minutes. I saw a hand specialist last week who took x-rays and checked me for carpal tunnel and trigger finger, and said I did not have any major issues with my hands. He thought the issue might be spine/nerve related and he referred me to a neurologist. The neurologist ordered blood tests to see if I had any vitamin/mineral deficiencies and also ordered a thyroid test. All results have come back normal. Something has got to be causing the painful spasms and the finger contractions. The neurologist prescribed Gabapentin, and I just started taking it. Has anyone else had experience with random hand spasms and finger contractions?