aka aphthous stomatitis or aphthous ulcers

Bacteroidales seems to increase suseptibility (bacteroides and prevotella), while proteobacteria, Veillonella, and porphyromonas seem to cause the ulceration [1]

Gemella, Streptococcus, and prevotella (in chronic cases) implicated [2]

Strep and h pylori likely [3] [4]

Acinetobacter elevated [5]

Streptococcus sanguinis (formerly sanguis) and Streptococcus mutans likely implicated [6]. The way I interpret the paper is that there is streptococcus spp predominating the oral cavity which then get infected with epstein-barr which causes further exacerbation of the bacteria. Certain white blood cells get infected with the virus and are attacked by cytotoxic white blood cells.


For a case study on potential treatments see canker treatment

Perhaps capsaicin and gingerol would help [7] [8] [9].

Perhaps lemon balm, capsaicin, hibiscus [10]

Cobalamin deficiency pernicious anemia likely the most common cause [11] not necessarily folic acid so not likely linked to homocysteine

Possibly magnesium because it restores barrier function

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