Since structural causes have been ruled out by endoscopy, two conditions that are commonly missed deserve urgent investigation. First: Laryngopharyngeal Reflux (LPR/silent reflux) â acid reflux that reaches the throat without causing heartburn, causing dryness, heaviness, and choking after extended use. A 2-month trial of a PPI (like pantoprazole 40mg before breakfast) can both diagnose and treat this. Second: Muscle Tension Dysphonia (MTD) â the muscles around the larynx become overworked and tense during prolonged speaking, causing exactly the symptoms you describe. This is a functional disorder not visible on regular endoscopy and needs a laryngologist (voice specialist ENT) and a speech-language pathologist (voice therapist) who can diagnose and treat it with specific vocal exercises. I would strongly recommend consulting a laryngologist with a voice clinic, and a speech therapist experienced in voice disorders â this combination is most likely to give you the lasting solution you've been seeking.
Next Steps
Consult a laryngologist (voice specialist ENT) at a voice clinic â not a general ENT. Simultaneously consult a speech-language pathologist for voice therapy. Try a 2-month PPI course for LPR. Stay well hydrated during speaking. Consult me on Practo for further guidance.