Chronic Cough, Hoarseness or Throat Clearing? It Could Be Silent Reflux (LPR)

If you have been clearing your throat for months, coughing without a cold, losing your voice by the end of the day, or feeling as if something is stuck in your throat that never goes down, you may already have heard the term "silent reflux." Its medical name is laryngopharyngeal reflux, or LPR. It is called silent because many people who have it never feel classic heartburn. That makes it easy to miss, and just as easy to over-diagnose. This article explains what LPR is, how to tell when your symptoms deserve urgent attention, how it is properly tested, and when anti-reflux surgery can help.

What Is Silent Reflux (LPR)?

In typical reflux, stomach contents wash up into the esophagus and cause heartburn or regurgitation. In laryngopharyngeal reflux (LPR), small amounts of that material travel higher still, past the upper end of the esophagus and into the throat (pharynx) and voice box (larynx). Those tissues are far more delicate than the esophageal lining, so even a little reflux, a few times a day, can be enough to irritate them.

An important point that patients are rarely told: throat symptoms and reflux are not the same thing. A recent international consensus of gastroenterologists, ear, nose and throat surgeons and voice specialists recommended separating the two ideas. Throat and airway complaints such as cough, voice change, throat clearing, excess mucus and throat pain are called laryngopharyngeal symptoms, while the term laryngopharyngeal reflux disease is reserved for people who have those symptoms plus objective proof of reflux. The panel was explicit that having the symptoms does not mean you have the disease (Yadlapati et al., American Journal of Gastroenterology, 2025). That distinction drives everything that follows.

Understanding the Biology Behind the Condition

The esophagus is built to tolerate occasional acid: it has a thicker lining, a cleansing wave of muscle contractions and saliva that neutralizes acid. The larynx has none of those defenses. Refluxed material carries acid, but it also carries pepsin, a digestive enzyme that can cling to throat tissue and become active again when exposed to acid later, and sometimes bile. Reflux that is only weakly acidic, which acid-blocking pills do not prevent, can therefore still irritate the throat.

Reflux can also cause symptoms indirectly. Acid in the lower esophagus can trigger a nerve reflex that produces coughing, and repeated irritation can make the throat hypersensitive, so that ordinary sensations are felt as a lump, tickle or urge to clear. That hypersensitivity can persist even after the reflux itself is controlled, which helps explain why some people improve only partly with reflux treatment alone.

Common Symptoms of Silent Reflux

• Frequent throat clearing
• Chronic cough, often after meals or on lying down
• Hoarseness, or a voice that tires easily
• A sensation of a lump or something stuck in the throat (globus)
• Excess mucus or postnasal drip that seems to come from nowhere
• Sore or burning throat, especially in the morning
• Choking spells that wake you from sleep
• Mild difficulty swallowing

Many clinics use a nine-question survey called the Reflux Symptom Index to score these complaints and track how they change with treatment (Belafsky et al., Journal of Voice, 2002). It is a helpful tool for measuring symptoms, but it cannot prove that reflux is the cause.

It Might Not Be Reflux: Other Causes to Consider

Chronic cough, hoarseness and throat clearing have many possible causes, and reflux is only one of them. Before or alongside a reflux evaluation, your doctors should consider:

• Postnasal drip from allergies or chronic sinus disease
• Asthma, including a cough-only form of asthma
• Blood pressure medications in the ACE inhibitor family, a well-known cause of dry cough
• Smoking or vaping
• Voice overuse and muscle tension in the voice box
• Growths on the vocal cords, from harmless nodules to cancer
• A throat that has become hypersensitive after an infection

This is why I work closely with ear, nose and throat specialists. A look at the larynx is often the first step, not to diagnose reflux, but to make sure nothing else is going on.

Red Flags: When to Get Checked Promptly

See a doctor soon, and ask for an examination of your voice box, if you have:

• Hoarseness that has lasted more than a few weeks, particularly if you smoke or used to smoke
• Coughing up blood
• Pain that spreads to the ear, or pain when swallowing
• Difficulty swallowing that is getting worse, or food sticking
• Unintended weight loss
• A lump in the neck
• Noisy or difficult breathing

Seek emergency care for trouble breathing, significant bleeding or being unable to swallow your saliva.

How Silent Reflux Is Diagnosed

Because symptoms alone cannot confirm LPR, the goal of testing is to answer a simple question: is reflux really happening, and is it severe enough to explain what you feel?

Laryngoscopy

An ear, nose and throat specialist passes a thin scope through the nose to examine the vocal cords and surrounding tissue. Redness and swelling are common in LPR, but they are also common in people without reflux, so this exam is mainly used to rule out other problems rather than to prove reflux.

Upper endoscopy

Upper endoscopy (EGD) looks for inflammation of the esophagus, Barrett's esophagus or a hiatal hernia. A normal endoscopy is common in LPR and does not rule it out.

Reflux monitoring

This is the most important test. Either a thin catheter through the nose measures acid and non-acid reflux over 24 hours (pH-impedance monitoring), or a small capsule attached to the esophagus during endoscopy records acid exposure for up to 96 hours (wireless pH monitoring). The consensus panel recommends both approaches and notes that they can be used together (Yadlapati et al., American Journal of Gastroenterology, 2025). By current international criteria, acid exposure above 6% of the recording time is conclusive evidence of reflux disease (Gyawali et al., Gut, 2024).

When should testing happen? The American College of Gastroenterology recommends that people with throat or airway symptoms but no heartburn or regurgitation have reflux testing before starting a long trial of acid medication, while people who have both throat symptoms and typical reflux symptoms can reasonably try medication first (Katz et al., American Journal of Gastroenterology, 2022).

Manometry

If surgery is being considered, high-resolution manometry measures the strength and coordination of the esophagus so the right type of anti-reflux valve can be chosen.

Treatment: What Works and What Often Does Not

Lifestyle changes

Because much LPR happens while people are upright and after meals, habits matter: smaller meals, no food within about three hours of bedtime, raising the head of the bed, limiting alcohol, stopping smoking and, when relevant, losing weight. These steps are low-risk and help many patients.

Medication

Acid-reducing medication helps people whose throat symptoms come with typical heartburn or regurgitation, and alginate products, which form a protective raft on top of stomach contents, can be added. But it is important to be realistic. In a randomized trial of patients with chronic laryngitis thought to be due to reflux, a high-dose proton pump inhibitor taken twice a day for four months worked no better than placebo (Vaezi et al., Laryngoscope, 2006). Similarly, the American College of Chest Physicians concluded that proton pump inhibitors used on their own showed no benefit for chronic cough attributed to reflux, and advised reserving physiological testing for refractory cases or when there is strong clinical suspicion (Kahrilas et al., Chest, 2016). If months of medication have not helped, the answer is usually better testing, not a higher dose.

Treating the hypersensitive throat

When the throat itself has become oversensitive, voice and swallowing therapy with a speech-language pathologist, sometimes combined with medications that calm nerve sensitivity, can help. The international consensus recognizes this as an important part of care (Yadlapati et al., American Journal of Gastroenterology, 2025).

When Anti-Reflux Surgery Helps

Surgery is not a first step for silent reflux, but it can be very effective for the right patient. The best candidates have objective proof of reflux on testing, a clear link between reflux and their symptoms, and often a hiatal hernia, regurgitation or significant non-acid reflux that pills cannot stop. Anti-reflux surgery works differently from medication: instead of changing the acidity of what comes up, it restores the valve so that less material comes up at all.

The main options in modern anti-reflux surgery include a laparoscopic Nissen fundoplication or partial wrap, repair of any hiatal hernia, and, in selected patients, magnetic sphincter augmentation with the LINX device. For patients with significant obesity, gastric bypass is often the most effective anti-reflux operation.

Equally important is knowing when not to operate. The American College of Gastroenterology cautions against invasive anti-reflux procedures for people whose only symptoms are in the throat or airway, have not responded to acid suppression and lack objective evidence of reflux (Katz et al., American Journal of Gastroenterology, 2022). In my practice, careful selection is what separates excellent outcomes from disappointing ones.

When to See a Foregut Surgeon

Consider a foregut surgical opinion if:

• Testing has confirmed reflux and your throat symptoms persist despite medication and lifestyle changes
• You have a hiatal hernia along with chronic cough, hoarseness or throat clearing
• You regurgitate food or liquid, or wake up choking
• You have GERD together with throat symptoms and would prefer not to take medication indefinitely
• You have been told you have PPI-refractory reflux and want to know whether surgery is appropriate

Foregut surgery is most successful when it is part of a team approach that includes gastroenterology, ear, nose and throat specialists and voice therapy. In over 25 years of practice, I have seen that the patients who do best are the ones whose reflux was proven before anyone picked up a scalpel. We evaluate patients from across the country, and testing done by your local doctors can often be reviewed before you visit. For readers in South Florida, you can learn more about our hiatal hernia and reflux surgery in Miami. To schedule an evaluation, call 305-692-0392.