Nonerosive reflux disease is defined as the presence of typical symptoms of gastroesophageal reflux disease(GERD) for more than 3 months in the absence of visible evidence of esophageal mucosal injure at endoscopy, which is an independent form of GERD.

• 非糜烂性反流病(nonerosive reflux disease,NERD)是指临床上有持续3个月以上典型的反流症状,而内镜下无食管粘膜损害证据的疾病,属于胃食管反流病(gastroesophageal reflux disease,GERD)中一个独立的疾病类型。