It’s not uncommon for arthritis patients to get mouth sores as a side effect from medications.
Why Do NSAIDS Cause Mouth Sores?
Why Does Methotrexate Cause Mouth Sores?
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A possible side effect of taking prescription methotrexate is mucositis, inflammation of the lining of your mouth.
Patients taking high doses are even more susceptible.
Why Do TNF-Blockers Cause Mouth Sores?
Oral thrush is a yeast infection that commonly presents as white patches on the tongue.
What Other Arthritis-Related Conditions Cause Mouth Sores?
Deeming GM, Collingwood J, Pemberton MN.Methotrexate and oral ulceration.Br Dent J.
2019;25(5):197-202. doi:10.1097/RHU.0000000000000810
National Rheumatoid Arthritis Society.RA medication and the mouth.