Great question: This is a question my students and ENT residents ask all the time. Sometimes the difference on exam is subtle. They both can cause laryngeal edema, cobblestoning, hoarseness, & excess mucus. Lpr patients may have a little more erythema and hyperactive gag than simple drainage. If a patient has definite nasal allergies and LPR symptoms, it can be tough to differentiate. I may need to treat both.
Answered 10/23/2017
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