Top April Tweet: Serious problem! Pulmonologists believe that MTX causes and/or worsens ILD. MTX causes hypersensitivity pneumonitis, not ILD. RA, lupus DM, PSS cause ILD and may need MTX to manage their disease. Research, look at this paper to start. https://t.co/8812FN2b8Q https://t.co/m9lCkYBnyb