ABSTRACT
A 47-year-old woman presented to the rheumatology outpatient clinic complaining of a chronic, non-productive cough. She described 2–3 months of progressive coughing and shortness of breath on exertion. She had experienced low-grade fevers over recent weeks but was still managing to attend her job where she worked as a supermarket cashier. She denied both night sweats and weight loss. She had a past medical history of rheumatoid arthritis for which she took oral methotrexate. She also took regular folic acid treatment. She lived with her sister, did not smoke tobacco or cannabis and drank around 10 units of alcohol weekly. She had not travelled abroad in the preceding 1 year and had no recent unprotected sexual intercourse.
