LPR occurs when both the UES and the LES don't work properly. The UES keeps stomach acid out of the pharynx (part of the digestive, and respiratory system and important for vocalization) and the larynx (important in breathing and sound production). When the UES doesn't work, stomach acid and enzymes injure the sensitive tissues of the larynx and pharynx. Typically LPR symptoms occur when someone is standing, bending over, or exercising. Interestingly enough, only 35% of people with LPR also exhibit symptoms of GERD such as heartburn. LPR symptoms include excessive throat clearing, hoarseness, cough, the feeling that something is caught in the throat, sore throat, excessive phlegm, and feeling of post nasal drip.
Great questions and I hope another member has info for you too. Do be your own best advocate and talk with your Dr. regarding these concerns.
I hope you stick with us as the members here are wise and wonderful.