Dear sir/madam, thanks for your question. My answer is as follows: 閣下奶奶的症狀：攪肚痛繼而腹瀉有許多原因，需要更多的資料以輔助診斷，例如症狀持續多長時間，是否最近的事情，新近的大便習慣轉變通常需要作多方面的檢查以找出病因；如果問題是多年的症狀，通常是比較功能性的問題；大便有否帶血、人有否消瘦等等相關症狀也是重要的，所以建議找醫生詳細診斷和檢查！
sounds like gastroesophageal reflux, but need further questioning and clinical examination before I can give any suggestions. Advised her/he to consult physician for further work up/management.
黃子群醫生(男)
黃子群醫生(男)