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Hello from JustAnswer.
Which blood pressure medicines are you taking?
I had asked for some further information and have not heard back.
There is no blood pressure medicine that is a common cause of nerve or neuropathy symptoms. There is a blood pressure medicine, prazosin, that has a mild risk of causing nerve symptoms, but it is not a medicine that is used very often for blood pressure.
I asked about what medicine you are taking so that I could look for whether there are any case reports regarding that drug. Isolated case reports do not prove that side effects, but it does raise it as a possibility.
I would also note that the most common cause of nerve pain, tingling, numbness, and cramping in the upper extremity is from degenerative disease of the cervical spine.
If I can provide any additional information, please let me know.