And then there are the unlucky folks who have recurrent aphthous stomatitis or RAS, which basically means that they have extra painful canker sores that keep reappearing.

有些人更可怜，他们会患上RAS，即反复出现的更为严重的口腔溃疡。

For example, the heart opens into the tongue and is related with the small intestine internally and externally. So, oral erosion (ulcerative stomatitis) may be clinically treated by clearing away the fire from the hear or small intestine.

例如，心开窍于舌，心与小肠相表里，所以可用清心火或泻小肠火的方法治疗口舌糜烂。