Hello, Your mother is suffering from chronic rheumatic type pains/ fibromyalgia and needs to be managed first by ruling out any possibility of infection related or metabolic cause. So some few test designed contextually by your doctor would need to be done. Such as ASLO, Rheumatoid factor, uric acid, malaria test (if malaria is endemic in your zone), and other infections or electrolyte analysis. After which it would be ruled out that her pains are either related to a particular cause or is idiopathic or strongly related to her ageing. In any case after running the diagnosis the pain still needs to be managed. But if there is a cause for the body pains, then it needs to be treated. The pain could be of nervous origin. Your doctor started managing the pains with 1st class analgesic. He would need to be stepping up gradually to 2nd class ( e.g tramadol) and maybe finally end up with 3rd class (morphine and derivatives) or try a combination of 1st class analgesic like he did earlier could be of additional benefit. Associating the analgesic with a specific agent like amitriptyline (a trycyclic antidepressant) , carbamazepine etc have proven to treat pain especially when their direct causes could not be identified. If you were prescribed snepdol, you can get your mother started on that before it could be changed. What I will suggest is you try to comfort your mother and make her know that gradually the pain will be managed. Just give your doctor sometime to get the right painkiller for your mother. Thank you and hope this helps