<s>[INST] Hi, I am Raj. My uncle age 50 got pain above the waist (back side-left). We have done X-Ray but did not get any factute or any thing . So doctor adviced some medichine but its not helpfull. What might be the problem ? which specialist doctor should we consult ? Thank U ! [/INST] you need to get an NCV don't for the upper limbs. it could be a spasm of the flexor or extensor retinaculum. apparently you may undergo an MRI to check if any possible tissue damage is there. visiting and orthopedic specialist or a physical therapist will be of help. sometimes exercise helps advised by a physical therapist. </s>