Talk to Rheumatologist on Idk But I Have Given All Details About The Problem

Actually my mother is suffering from pain in different parts of body from last few years.we had visited may doctors but unfortunately disease didn't get diagnosed properly they give us some medicines and those medicines worked for short period of time and after some time we have visit doctors and all this........... currently she is suffering from pain in shoulders , around the neck and in several joints and space around the shoulders and neck is little bit swallow and due to this she is also suffering from headache and pain in eyes and also her stomach is not working properly and stomach is also little bit swallow.................. MAIN POINT : 1_ I want a proper treatment of all her diseases and for sake of this I want to get appointment from a specialist so plz suggest me a specialist ??? 2_ what is name if that department in which I should go for diagnose of all diseases ???