最近,有樟树市一名老年读者来信诉说近三四年来经常口干,每隔一会就要喝一次水,不然就会干得发呕,喘不过气来。尤其是晚上睡觉醒来时,口内更是干、苦、酸、涩,非常难受,吃了许多中药也没见效。他问:这样几年长期口干、治而不愈是什么原因。对这个问题, Recently, an elderly reader in the city of Changshu wrote a letter that he often had dry mouth for nearly three to four years, drinking water once in a while, or he would vomit and breathe out. Especially when you wake up at night, the mouth is even drier, bitter, sour and astringent, very uncomfortable, and eating a lot of traditional Chinese medicines has no effect. He asked: In such a few years long-term dry mouth, cure unhealed for what reason. On this issue,