My father had bypass surgery 3 months back, after which his left arm, 4th n 5th finger, wrist started paining. It's tingling and painful, fingers are sensitive n swollen. Doctor said it's due to the surgery, and it's common and will get better soon. But it's been 3 months now, the pain is still high. Currently on dolo650 every night for pain. Is there no cure? Should we consult a neurologist? How long is it expected to last?