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Home > Digestive > Conditions > Acid Reflux and GERD: Causes, Symptoms, and Treatment

Acid Reflux and GERD: Causes, Symptoms, and Treatment

July 24, 2020 - Updated on August 4, 2021
7 min read
By Priyanka Chugh, MD | Gastroenterologist

In this article:

  • The Mechanism Behind Acid Reflux
  • Causes of GERD
  • Symptoms of GERD
  • Clinical Treatment of GERD
  • Diagnosis of GERD
  • Potential Complications of GERD
  • When to See a Doctor
  • Final Word

Acid reflux is the backflow of gastric acid from the stomach to the esophagus. The acid causes a burning sensation in the chest called heartburn.

acid reflux (GERD)

The Mechanism Behind Acid Reflux

The food you eat is pushed down the esophagus or food pipe by the peristaltic action (involuntary wavelike contractions) of the esophageal muscles.

A valve known as the lower esophageal sphincter (LES) is present at the narrower end of the esophagus, where the esophagus meets the stomach. The LES only opens to allow the downward passage of ingested food into the stomach and remains tightly shut at all other times.

However, if the valve becomes damaged or dysfunctional such that it is unable to close properly, the acidic stomach content will find space to regurgitate into the esophagus and this is known as acid reflux.

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If acid reflux becomes a frequent occurrence, the condition is referred to as gastroesophageal reflux disease (GERD), which is usually a chronic problem that requires timely treatment. Untreated cases are associated with health complications, which often require surgery.

Causes of GERD

factors that contribute to GERD

A faulty LES is the root cause behind acid reflux and GERD, but other factors can make these problems worse, such as:

1. Acid content

An overproduction of acid by the stomach or improper emptying of bile juice and acid can contribute to GERD. (1)

2. Diet

Overconsumption of citrusy, fatty, or spicy foods, caffeine, and chocolate can trigger GERD, as can staying hungry for prolonged periods or eating too much at once.

3. Lifestyle

Alcohol consumption, smoking, increased stress, wearing tight clothes that press on the stomach, and eating close to bedtime can all aggravate acid reflux.

4. Hiatal hernia

The esophagus passes through the diaphragm, below which the stomach is present. The diaphragm and the LES are at the same level, enabling the diaphragm to assist in closing the LES.

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In hiatal hernia, the hole in the diaphragm enlarges, through which the upper portion of the stomach moves into the chest cavity. This repositioning prevents the diaphragm from acting on the LES and impairs the functioning of the LES.

5. Obesity

The excessive fat in obese individuals can put undue pressure on the LES, forcing it open and causing acid reflux.

6. Medications

Acid reflux can be a side effect of the following medications:

  • Anticholinergics for seasickness
  • Bronchodilators for asthma
  • Beta-blockers for heart diseases
  • Dopamine drugs for Parkinson’s disease
  • Sedatives for insomnia or anxiety
  • Calcium channel blockers for elevated blood pressure
  • Tricyclics for depression
  • Progestin for birth control

7. Diseases

Studies show an association of GERD with diabetes and asthma. The complications of diabetes can impede the emptying of the stomach, known as gastroparesis and can cause acid reflux. The relationship between asthma and GERD is not well established. (2)(3)

8. Problems in the food pipe

In some cases, the food pipe may become extremely sensitive and fail to push down the acids back into the stomach.

9. Other risk factors

Pregnancy, cystic fibrosis, and abnormalities of the digestive system caused by systemic scleroderma can make you increasingly susceptible to GERD.

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Symptoms of GERD

Heartburn and the feeling of having acid in the throat are the most prevalent symptom of GERD, which are generally accompanied by many of the following symptoms:

  • Bloating due to entrapment of gas in the gastrointestinal tract
  • Chronic cough due to acid-induced irritation in the throat or esophagus (4)
  • Dysphagia, or difficulty in swallowing, due to pain and a burning sensation in the esophagus
  • Chest pain caused by esophageal spasms, which are due to the esophageal damage caused by the action of acid
  • Nausea and regurgitation (the reflux of gastric juices and undigested food into the mouth)
  • Shortness of breath and wheezing
  • Hoarseness and other voice problems

Clinical Treatment of GERD

medical treatment options for GERD

GERD is a chronic condition that is managed in the following ways.

1. Drug therapy

Severe acid reflux needs drug therapy, which involves the use of acid-suppressing medications and prokinetic drugs (medications that enhance esophageal motility).

The following classes of over-the-counter medications can be used for the management of acid reflux:

  • Antacids: These medications help in neutralizing the low pH of the stomach. Antacids can be used for rapid relief. However, their effect is only short-lived, and the acid production may increase when the antacids leave the stomach. Such an increase is a response to hormonal and neural signals that are produced by low levels of acid.
  • H2-receptor blockers: These medications work by reducing acid production for up to 12 hours. Drugs with a longer-lasting effect can be obtained with a prescription.
  • Proton pump inhibitors: Like H2-receptor blockers, these medicines block the production of acid. They are stronger and also help in relieving throat damage.

2. Surgical therapy

Surgery is advised:

  • If medicines are unable to provide relief
  • If the patient is averse to the idea of lifetime medications for managing this chronic problem
  • To treat complications such as pulmonary disease, growth failure, or esophagitis (damage in the esophagus due to acid exposure)

GERD is most commonly treated with an anti-reflux surgery known as fundoplication.

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In this operation, part of the stomach (the fundus) is wrapped around the lower part of the esophagus. This can be done by making a large incision or several small incisions (laparoscopic surgery). The stomach may be attached to a feeding tube if necessary.

Diagnosis of GERD

A GERD diagnosis can be made based on your symptoms and medical history. If you have typical symptoms, the doctor may recommend specific tests.

The following tests can confirm the diagnosis of GERD:

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  • Ambulatory acid (pH) probe test: Measures the pH level inside the esophagus to detect the presence of acid
  • X-ray: To identify any structural anomalies in the gastrointestinal tract
  • Endoscopy: To look inside the upper digestive tract and collect a sample for biopsy
  • Esophageal motility test (manometry): To determine the pressure level inside the esophagus and measure its muscle movement (5)

Potential Complications of GERD

how is GERD diagnosed?

A severe case of GERD with frequent acid reflux can cause complications, including:

1. Esophagitis

Frequent acid exposure can cause inflammation in the esophagus, also known as esophagitis. The acid produces breaks in the lining of the esophagus and causes ulcers. If not treated, esophagitis can increase the risk of cancer.

2. Esophageal strictures

An abnormal narrowing of the esophagus due to fibrosis, inflammation, or neoplasia is known as an esophageal stricture, which causes problems in swallowing. Esophageal strictures should be treated immediately, as they can damage the mucosal and submucosal layers.

3. Barrett’s esophagus

Prolonged inflammation of the esophagus caused by GERD can result in the development of Barrett’s esophagus. In this condition, the lining of the esophagus slowly modifies and starts to resemble the lining of the small intestine.

When to See a Doctor

Acid reflux can usually be managed with lifestyle changes, diet modulation, and over-the-counter medications. If these therapies fail to relieve the symptoms, it is recommended to seek medical help.

Also, if your symptoms are frequent and worsen with time, seek immediate medical care. Mention all the associated problems, such as sleep disturbance or insomnia, so that the doctor can prescribe appropriate treatment.

What you may ask your doctor
  • Is my acid reflux severe?
  • How do I differentiate between chest pain and heartburn?
  • Do I need to get tested?
  • Will the prescribed medicines cause any side effects?
  • Are there complications associated with my problem?
What your doctor may ask you
  • When did you first start experiencing the symptoms?
  • Have you undergone any treatment?
  • How would you rate your chest pain?
  • Have you been diagnosed with GERD before?
  • Are you expecting a child?
  • Do you have any other medical problems?

Final Word

While occasional heartburn is not a cause for concern, GERD can cause severe complications. Fortunately, GERD can be easily managed with drug therapies, surgery, and simple lifestyle changes. It is vital to be treated at the earliest to keep the condition from advancing to a serious stage.

Continue Reading Continue ReadingWays to Manage Acid Reflux and GERD at Home
References
  1. Nwokediuko SC. Current trends in the management of gastroesophageal reflux disease: a review. ISRN gastroenterology. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3401535/. Published 2012.
  2. Sun X-M, Tan J-C, Zhu Y, Lin L. Association between diabetes mellitus and gastroesophageal reflux disease: A meta-analysis. World journal of gastroenterology. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4356931/. Published March 14, 2015.
  3. Ates F, Vaezi MF. Insight Into the Relationship Between Gastroesophageal Reflux Disease and Asthma. Gastroenterology & hepatology. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5395714/. Published November 2014.
  4. Madanick RD. Management of GERD-Related Chronic Cough. Gastroenterology & hepatology. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3740808/. Published May 2013.
  5. Badillo R, Francis D. Diagnosis and treatment of gastroesophageal reflux disease. World journal of gastrointestinal pharmacology and therapeutics. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4133436/. Published August 6, 2014
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