A greeting my dear friend, I have had many patients in my practice during my short career of medicine, not the exact cause of your difficulty, but one of the most important things is to maintain a good mood, followed by physiotherapy, these practices It brings extremely good results, they are not short-term results but if in the medium or long term, another of the things that can help a lot are multivitamin injections such as the B complex, as long as you are not allergic to these medicines. I recommend that you continue to give movement to your hand and little by little you will see good results.