My mother is having sero Negative Rheumatoid arthritis also she is having osteoarthritis Grade 3 in both knees recently she take steroid injection in her knee for pain, from last month she is complaining that she doesn't feel any taste even any cooked meal she doesn't want to eat.. She feels like vomiting when she is eat vegetables, even chicken fish... Also weakness. She is on DMARD medicine like methotrexate 20 on every Sunday, lefno 20, tofza 5 twice. Pls tell what to do