respiratory tract symptoms AE reflux laryngitis AE QY, JX, HY 10067869 This is an AE which is believed to be caused by retrograde flow of gastric contents (particularly acid and pepsin) that affect pharyngeal and laryngeal mucosa by direct contact or by a secondary mechanism. 反流性喉炎 https://pubmed.ncbi.nlm.nih.gov/23769008/