My mother is of 67 year old. She used to say that she has pain in her heart, sometimes leg pains, body ache and some more problems. We visited a cardiologist and done mri, ultrasound, ecg and all other tests but doctor said there is no any abnormal condition. He said that the problems do not seems so big as she is telling or feeling. Moreover she also suffered from fever for about two years. Right now there is no fever but there is burning sensation in whole body, urine and stool. Besides this any medicine suits her for about 4-5 days initially and after that the same medicine starts side effect and burning sensation. So, in the respect of above matter, please suggest me which doctor should I see?