A rare side effect of widely used drugs

Genie presents with abdominal pain and intermittent constipation. Is her rheumatoid arthritis to blame?
Senior woman stomach ache

Genie is 68 and has been seeing you for some years.

She has rheumatoid arthritis (RA) for which she takes diclofenac 50mg on occasion — up to three times a day as needed, for up to a week, perhaps every few months.