I am taking narproxn and tremadal for pain on sprained wrist that also has carpal tunnel. Well pain meds are making me so itchy I can't stop scratching?

Stop the meds and . Call your doctor. Not every patient can tolerate every medication and the right med for you should have no side effects.
Stop both meds. Your having a mild allergic reaction to one or both meds. I would stop both meds., take Benadryl (diphenhydramine) ( ask your pharmacist ) and see your primary md asap.