Hiatal Hernia

Overview

A hiatal hernia is a condition in which part of the stomach moves upward through an opening in the diaphragm into the chest area. The diaphragm is the large muscle that separates the chest from the abdomen and helps with breathing. Normally, the esophagus passes through a small opening in the diaphragm before joining the stomach. When this opening becomes wider or weaker, the upper part of the stomach can slide through it.

Hiatal hernias are common, especially in adults, and many people do not know they have one because it may cause no symptoms. In some cases, a hiatal hernia can contribute to acid reflux, where stomach contents move back into the esophagus. This may lead to discomfort such as heartburn or regurgitation. The condition can range from mild to more complex, depending on the size and type of hernia and the symptoms it causes.

Symptoms

Many small hiatal hernias do not cause noticeable symptoms and may be found during tests for another reason. When symptoms occur, they are often related to reflux or irritation of the esophagus.

• Heartburn or a burning feeling behind the breastbone
• Sour or bitter taste in the mouth
• Regurgitation of food or liquid
• Difficulty swallowing
• Chest or upper abdominal discomfort
• Feeling full soon after eating
• Burping or bloating
• Worsening symptoms after meals or when lying down
• Chronic cough, hoarseness, or throat irritation in some people

Chest discomfort can have many causes, including heart-related conditions. Any new, severe, or unexplained chest pain should be assessed urgently by a medical professional.

Causes and Risk Factors

A hiatal hernia can develop when the tissues and muscles around the diaphragm opening become weakened or stretched. In many cases, the exact cause is not clear. Pressure inside the abdomen may also play a role by pushing the stomach upward toward the chest.

Factors that may increase the likelihood of developing a hiatal hernia include:

• Increasing age, as tissues may lose strength over time
• Being overweight or having increased abdominal pressure
• Pregnancy
• Repeated heavy lifting or straining
• Long-term coughing
• Frequent vomiting or forceful straining
• Previous injury or surgery involving the diaphragm or upper abdomen
• Being born with a larger opening in the diaphragm, in rare cases

Not everyone with these risk factors will develop a hiatal hernia, and some people with a hiatal hernia have no clear risk factors.

Diagnosis

A hiatal hernia is usually diagnosed by a healthcare professional based on symptoms, medical history, physical examination, and specific tests when needed. Because symptoms can overlap with other digestive or heart-related conditions, proper medical evaluation is important.

Tests that may be used include:

• Upper endoscopy, in which a thin flexible camera is used to view the esophagus and stomach
• Imaging tests using contrast material to show the shape and position of the esophagus and stomach
• Tests that measure acid reflux or pressure in the esophagus, when symptoms are persistent or complex

These tests help the medical team understand whether a hiatal hernia is present, how large it is, and whether it is associated with reflux, inflammation, narrowing, or other complications. The choice of test depends on the person’s symptoms and overall health.

Treatment Options

Treatment depends on the size and type of hiatal hernia, the severity of symptoms, and whether complications are present. If a hiatal hernia is small and causes no symptoms, regular monitoring and lifestyle guidance may be enough.

For people with reflux-related symptoms, doctors may recommend lifestyle changes. These can include eating smaller meals, avoiding lying down soon after eating, reducing foods or drinks that trigger symptoms, maintaining a healthy weight, and elevating the head of the bed if nighttime reflux occurs. Smoking cessation may also be advised for overall digestive and respiratory health.

Medical treatment may be recommended to reduce reflux symptoms or help protect the esophagus from irritation. The specific choice of medication depends on the individual situation and should be discussed with a healthcare professional.

Surgery may be considered in selected cases, such as large hiatal hernias, severe or persistent symptoms despite appropriate treatment, complications, or certain types of hernias that may carry a higher risk of stomach trapping. Surgical approaches aim to reposition the stomach, repair the diaphragm opening, and reduce reflux when needed. The most suitable option depends on clinical findings, test results, and the patient’s overall condition.

When to See a Doctor

It is advisable to see a doctor if you have frequent heartburn, regurgitation, difficulty swallowing, ongoing upper abdominal discomfort, or symptoms that interfere with daily life or sleep. Medical assessment is also important if symptoms continue despite lifestyle changes or if you have a known hiatal hernia and symptoms are worsening.

Seek urgent medical attention if you experience severe chest pain, chest pressure, pain spreading to the arm, neck, jaw, or back, shortness of breath, fainting, vomiting blood, black stools, severe difficulty swallowing, or intense abdominal pain. These symptoms may indicate a serious condition that needs prompt evaluation.

With appropriate assessment and care, many people with hiatal hernia can manage symptoms effectively and reduce the risk of complications. A gastroenterology specialist can help determine the most suitable evaluation and treatment plan for each patient.