Thanks for query
is very common in a patient suffering from rheumatoid arthritis
because of some form of immuno-compromisation is always there due to immunosuppressive agents used in rheumatoid arthritis. So in this case anti-tubercular drugs should be started as well as anti-rheumatic drugs should also be continued. Among the RA drugs salazopyrin i.e. Saaz DS
has no immunosuppressive effect that can flare up underlying tuberculosis. So your mom should continue to take Saaz DS while on treatment of tuberculosis.