Indigestion or Hernia? How to Tell the Difference

Ever experienced a burning sensation after a meal or a nagging discomfort in your chest or upper abdomen, and wondered what may be causing it? These symptoms can come and go, sometimes settling on their own, but at other times lingering just enough to raise concern. While they are often linked to indigestion, there are instances where they may be related to a hernia instead.

Because the symptoms can overlap, it is not always easy to tell the difference. Having a clearer understanding of how these conditions present can help you recognise when simple measures may suffice and when it is worth seeking medical advice.

What Is Indigestion?

Indigestion, also known as dyspepsia, refers to a group of symptoms rather than a single condition. It usually arises from irritation in the upper digestive tract, often linked to stomach acid or how the stomach processes food. Common triggers include eating too quickly, consuming rich or greasy meals or experiencing stress.

Specific Symptoms

Indigestion manifests differently for everyone, but the symptoms generally centre around the upper stomach area. You may experience:

• A gnawing or burning sensation that may rise towards the chest or throat
• Feeling overly full during or shortly after eating
• Nausea or the urge to vomit
• Frequent burping or bloating
• A sour or acidic taste in the mouth, often related to reflux

Common Related Conditions

When symptoms occur regularly, they may be associated with underlying digestive conditions, such as:

• Gastro-Oesophageal Reflux Disease (GERD): This occurs when stomach acid flows back into the oesophagus, leading to irritation and a burning sensation.
• Gastritis: This refers to inflammation of the stomach lining, which can cause discomfort, bloating or nausea.
• Peptic Ulcers: These are open sores that form in the lining of the stomach or small intestine and may cause pain, especially between meals or at night.

How It Differs from a Hernia

Although a hiatal hernia can produce similar discomfort, indigestion is linked to digestive processes rather than a structural weakness. It does not cause a visible lump, and symptoms often fluctuate depending on meals or lifestyle habits.

What Is a Hernia?

A hernia occurs when an internal organ or fatty tissue pushes through a weakened area in the surrounding muscle or connective tissue. Unlike indigestion, which is related to digestion, a hernia is a physical change in the body’s structure.

Some hernias develop in the abdominal wall or groin, while others, such as hiatal hernias, occur internally when part of the stomach moves into the chest through the diaphragm. It is this internal type that most often resembles indigestion.

Specific Symptoms

Hernia symptoms can vary depending on the type, its size and whether nearby tissue becomes trapped or irritated. In some cases, the discomfort is mild and only noticeable during certain activities. In others, the symptoms can become more persistent and affect daily routines.

Hiatal Hernias (Internal)

Because a hiatal hernia develops within the body, it does not usually produce a visible lump. Instead, the symptoms tend to resemble acid reflux or indigestion, which can make it harder to identify at first. You may notice:

• Heartburn that worsens when bending over or lying down
• Difficulty swallowing
• Chest discomfort or pain
• Shortness of breath in some cases

Abdominal or Groin Hernias (External)

Hernias that occur in the abdominal wall or groin are more likely to cause visible changes. The symptoms are often linked to physical movement or strain, and they may become more noticeable over time. Common signs include:

• A lump or swelling that becomes more obvious when standing and may reduce when lying down.
• Discomfort that worsens with lifting, coughing or straining during bowel movements.
• A dragging sensation, pressure or heaviness in the groin or abdomen.

If symptoms worsen suddenly or are accompanied by severe pain, nausea or vomiting, urgent medical assessment is recommended.

Difference with Indigestion

One key difference lies in what triggers the symptoms. Indigestion is often linked to meals and digestive activity, while hernia-related discomfort tends to worsen with physical strain or changes in posture. External hernias also present with a localised bulge, which is not seen in indigestion.

When to Seek Medical Attention

Occasional indigestion is common and usually settles with simple measures. However, both digestive conditions and hernias can lead to complications if left unaddressed. Knowing when to seek help is important.

You should seek medical attention promptly if you experience:

• Signs of Strangulation: If a hernia becomes trapped, its blood supply can be cut off. Symptoms include sudden, worsening pain, nausea, vomiting and the inability to pass gas or have a bowel movement. The bulge may also turn red, purple or darker in colour. This is a medical emergency.
• Vomiting Blood: This may appear bright red or resemble coffee grounds and can indicate bleeding within the digestive tract.
• Black, Tarry Stools: This can be another sign of internal bleeding and should not be ignored.
• Difficulty Swallowing: Increasing trouble swallowing food or liquids may suggest an underlying issue that requires further evaluation.
• Unexplained Weight Loss: Losing weight without changes to your diet or activity level can be a warning sign of a more serious condition.
• Chest Pain: Chest discomfort should always be taken seriously, as it may be related to heart conditions. Even if it feels like heartburn, it is safer to have it checked.

Understanding Your Symptoms and Next Steps

It is not always easy to tell whether your discomfort is linked to digestion or a structural issue like a hernia. Paying attention to patterns, such as when symptoms occur and what seems to trigger them, can offer helpful clues.

If your symptoms keep returning, worsen over time or are accompanied by a lump or persistent discomfort, it is worth having them assessed. At HKS Hernia Clinic led by Dr Ho Kok Sun, you can receive a careful evaluation and be guided through the appropriate next steps, whether that involves monitoring, lifestyle adjustments or treatment. Schedule a consultation to better understand your condition and manage it with greater confidence.

Meet Our Colorectal Surgeon in Singapore

Dr Ho Kok Sun has been committed to treating colorectal cancer through minimally invasive surgical techniques for over two decades. Dr Ho was previously President of the ASEAN Society of Colorectal Surgeons and the Society of Colorectal Surgeons (Singapore), as well as a founding member of the Eurasian Colorectal Technologies Association. Dr Ho was actively involved in the training of medical students and residents and has published widely in reputable journals and book chapters. He believes that treatment should always be personalised to the patient’s needs.