<s>[INST] Hi my mom is having a back pain from last few days and her left arm and wrist is also aching from last week...im really tensed for this. can the real problem which is causing the pain can be determined by an MRI scan? if yes how much will cost it?? please help. [/INST] Welcome to Chat Doctor .1. Basic remedies for back pain are back exercises, maintaining good position, flat bed will actually give relief in most of the patients.2. You have already undergone the tests and your doctor recommended MRI means, there is something he is suspecting in the spine.3.MRI will help in disc pathologies, nerve related, spinal cord related things can be evaluated.4. So please follow your doctor, as MRI is almost compulsory to evaluate the definitive cause in case of back pain.5. Sorry cost issues can to be answered, as I do not have any idea about it. Hope it helps you. Wish you a good health. Anything to ask ? Do not hesitate. Thank you. </s>