I get canker sores [0] only during periods of extremely high stress or sleep deprivation. [0]https://en.wikipedia.org/wiki/Aphthous_stomatitis https://en.wikip

I get canker sores [0] only during periods of extremely high stress or sleep deprivation. [0]https://en.wikipedia.org/wiki/Aphthous_stomatitis https://en.wikipedia.org/wiki/Aphthous_stomatitis