Introduction

Throat reflux, also known as laryngopharyngeal reflux, is the backflow of stomach contents into the upper parts of the respiratory tract involving the back of your throat (pharynx), voice box (larynx) and nasal cavity.

While throat reflux can occur independently, it is usually associated with Gastro-oesophageal reflux disease (GORD) as well.² The stomach contents which enters the throat usually include gastric acid, non-acidic substances, bile and pepsin. 

Throat reflux causes irritation of the delicate throat lining, which can persist for a long time and become chronic if left untreated. It is often misunderstood and even overlooked due to its close resemblance to GORD. Therefore understanding their differences and identifying the warning signs is crucial in deciding when to seek help from your doctor.

What is throat reflux?

While many people are familiar with acid reflux causing heartburn, throat reflux is often different; it may not cause the classic burning sensation but instead lead to symptoms like hoarseness, persistent feeling of a lump in the throat (‘globus’ sensation), chronic cough, or frequent throat clearing. 

Other less common symptoms include post nasal drip, bitter taste of acid in the mouth and worsening of asthma. Many of these symptoms reflect on where the reflux has reached to, and in the case of throat reflux, they involve the lower part of the respiratory tract and the upper part of the digestive tract.

There is no specific explanation as to why some have throat reflux while others have only GORD. However, the likelihood of developing either one or both these conditions depend mainly on your lifestyle, dietary and smoking habits, alcohol and caffeine intake and many other factors that increase the risk of reflux.

Misconception 1: "throat reflux is just another form of acid reflux”

Since both throat reflux and GORD are conditions involving the backflow of stomach contents, most people tend to label these conditions under the umbrella term of acid reflux. While they share similar development mechanisms, they are two distinct conditions managed by different medical specialties. For example, Otolaryngologists treat throat reflux while Gastroenterologists manage GORD. 

How GORD differs from LPR

Location of reflux 

The backflow of stomach juices only reaches up to the oesophagus (food pipe) in contrast to throat reflux where reflux reaches all the way up to the throat. Knowing where the reflux occurs is also crucial, since it reflects on the main differences between the symptoms of GORD and throat reflux.

Underlying defect in the sphincters

GORD usually occurs due to a weakened lower oesophageal sphincter which is a valve located in the junction between the stomach and oesophagus, while LPR tends to be a result of a dysfunction of the upper oesophageal sphincter. These valves functions as an antireflux mechanism which prevents the reflux of stomach contents.

Despite their similarities it is crucial to be aware of the different symptoms they produce rather than dismissing it as just another acid reflux.

Misconception 2: "if there's no heartburn, it’s not reflux"

Throat reflux is a condition that is commonly mistaken for heartburn. Heartburn is described as a burning discomfort, rising up into the chest and sometimes accompanied by backflow (regurgitation) of acidic or bitter fluid into the throat. However, having no symptoms of heartburn cannot be overlooked since throat reflux presents with vague symptoms such as chronic cough and persistent throat clearing which are all attributable to reflux.

Laryngopharyngeal reflux is often referred to as ‘silent reflux’ because many individuals do not experience the classic symptoms of heartburn or indigestion. As a result, the condition is frequently overlooked or mistaken for allergies, sinus issues, or stress. Silent reflux can occur even without recent food intake and is more common at night, although it can also happen during the day.

Scientific studies has revealed the presence of Pepsin (a stomach enzyme produced by the stomach) in the throat tissue of people, confirming that throat reflux does occur in people without heartburn.³ It also shows that even small amounts of acid can damage the throat lining causing inflammation of the throat even in people without heartburn, proving that the throat tissue is more sensitive than the oesophagus. 

Misconception 3: "throat reflux isn’t serious"

Some people view throat reflux as a minor issue, such as an occasional cough or sore throat, that does not warrant much attention. Unfortunately, due to its atypical symptoms, throat reflux often goes undetected for extended periods, and many patients are not diagnosed or treated at an early stage. When left untreated, it can become chronic and lead to serious laryngeal pathologies, including narrowing of the larynx and trachea (laryngotracheal stenosis), granulomas, vocal cord swelling, and even laryngeal cancer.⁵

Throat reflux can also act as an irritant, triggering or worsening symptoms in individuals with respiratory conditions such as asthma. Its association with conditions like chronic sinusitis and asthma further highlights that throat reflux is far from trivial when overlooked.⁶ 

Misconception 4: "a normal endoscopy means you don’t have reflux"

Since throat reflux affects areas of the upper respiratory tract, such as the throat, voice box (larynx), and back of the nose, these regions are not always visible during a standard upper endoscopy, which is typically used to investigate GORD. As a result, a person may have throat reflux even if their oesophagus appears completely healthy.

In such cases, laryngoscopy may be more beneficial. This procedure involves passing a flexible endoscope through the nose to examine the throat. Laryngoscopy is particularly useful in detecting inflammatory changes caused by small amounts of stomach acid or pepsin that reach the upper airway, levels that may be too low to damage the oesophagus but high enough to irritate the more sensitive tissues of the throat.

Currently, diagnosing throat reflux relies on a combination of clinical approaches, including medical history, physical examination, laryngoscopy, and 24-hour pH monitoring. The current gold standard for diagnosis is 24-hour pH monitoring, in which a probe is inserted into the throat and oesophagus to detect abnormal acid exposure.⁴

Misconception 5: "reflux can only treated by surgery" 

A common misconception is that surgery is the only solution for throat reflux, but this couldn’t be further from the truth. Management of throat reflux usually begins with non-surgical approaches which are considered as the first line treatment, while surgery is typically reserved as last resort for extreme cases where all non-surgical options have not been effective.

Science recommends that with the right combination of lifestyle changes, medical treatment, and awareness, most people can find real relief. Treatment usually begins with lifestyle changes ranging from weight loss to dietary modifications such as switching to low-fat, low-acid plant-based diets,and avoiding meals immediately before sleeping.⁹ These dietary changes are crucial in not only improving reflux symptoms but they also determine how well your medication will respond.⁷

Medications such as proton pump inhibitors prescribed for two to three months remains the standard first line treatment.⁷ It works by decreasing acid production in the stomach thereby reducing the damage caused by gastric enzymes which requires an acid medium for activation.⁸ If symptoms persist, your doctor will ensure that further evaluation is performed before pursuing surgery.

One well-established surgical procedure for throat reflux is Nissen fundoplication. This involves wrapping the upper stomach around the lower oesophagus in an attempt to limit acid reflux from the stomach. This procedure was found to be effective at reducing both throat reflux and GORD.¹

Summary

Throat reflux, or laryngopharyngeal reflux (LPR), is often misunderstood and mistaken for typical acid reflux or GORD. Unlike GORD, which affects the oesophagus, throat reflux involves the backflow of stomach contents into the throat, voice box, and nasal cavity—areas that are more sensitive and harder to examine through standard procedures.

Because LPR often occurs without heartburn, it is frequently called “silent reflux” and can be overlooked or misdiagnosed. If left untreated, it can lead to serious complications such as vocal cord damage, chronic cough, or even laryngeal cancer.

Many people wrongly assume that throat reflux is minor or only treatable through surgery. In reality, most cases are managed effectively with lifestyle changes and medication. Diagnosis relies on a thorough evaluation, including laryngoscopy and 24-hour pH monitoring, rather than relying solely on standard endoscopy. Recognising the differences between GORD and LPR and seeking early medical advice is key to preventing complications and improving quality of life.