s no association of canker sore with ARS but from uptodate.com, two journal
articles (one being one of the top publications, the British
Medical Journal) are cited as saying that there is an association, which makes it a bit concerning to me.
"Painful mucocutaneous ulceration is one of the most distinctive manifestations of the syndrome. Shallow, sharply demarcated ulcers may be found on the oral mucosa, anus, penis, or esophagus .