Quick answer. A hernia is a bulge that appears when an organ or tissue pushes through a weak spot in the surrounding muscle or connective tissue, most often in the groin or abdomen. Many hernias are repaired with surgery, and a sudden painful, hard bulge that will not push back in is a medical emergency.
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A hernia is one of the most common reasons a general surgeon is consulted in Singapore. It happens when part of the bowel, fat or another organ bulges through a weakened area of the abdominal wall, producing a lump you can often see or feel – typically in the groin, around the navel, or at the site of a previous operation. Many people first notice it as a soft swelling that appears when they cough, lift or strain and disappears when they lie down.
Most hernias are not dangerous in themselves, but they do not heal on their own and tend to enlarge over time. The main concern is that a loop of bowel can become trapped (obstructed) or have its blood supply cut off (strangulated), which is an emergency. This guide explains the types of hernia, how they are diagnosed, what surgical repair in Singapore involves, and the warning signs that mean you should seek urgent care.
At a glance
| Type | Where it appears | Who it commonly affects |
|---|---|---|
| Inguinal | Groin, may extend into the scrotum | More common in men; the most frequent type |
| Femoral | Upper inner thigh, just below the groin crease | More common in women; higher risk of strangulation |
| Umbilical | Around the navel | Babies, and adults with raised abdominal pressure |
| Hiatal | Stomach pushes up through the diaphragm (internal) | Linked with acid reflux and heartburn |
| Incisional | Through the scar of a previous abdominal operation | People who have had prior surgery |
What is a hernia?
A hernia occurs when an internal part of the body – usually a portion of bowel or fatty tissue – pushes through a weakness in the muscle or tissue wall that normally holds it in place. The result is a visible or palpable bulge. The most common form is an inguinal (groin) hernia, but hernias can also form around the navel (umbilical), at an old surgical scar (incisional), or internally where the stomach slides through the diaphragm (hiatal).
Hernias are very common and are seen across all age groups in Singapore, from infants with umbilical hernias to older adults with groin hernias. A hernia will not resolve by itself; the underlying muscle gap does not close on its own, so the only definitive treatment is surgical repair.
Symptoms & signs
The classic sign is a lump that becomes more obvious on standing, coughing or straining and often eases when you lie flat. Other features can include:
- A soft bulge in the groin, scrotum, navel or at a previous scar
- A dragging, aching or heavy sensation in the area, especially after activity
- Discomfort that worsens with lifting, coughing or prolonged standing
- For a hiatal hernia: heartburn, acid reflux and a sensation of food sticking
Many hernias are reducible, meaning the bulge can be gently pushed back in. A bulge that becomes firm, tender and cannot be pushed back may be trapped, which needs prompt assessment.
Causes & risk factors
Hernias develop from a combination of a weak point in the muscle wall and increased pressure inside the abdomen. Some weaknesses are present from birth; others develop with age or after surgery. Factors that raise the risk include:
- Heavy lifting or strenuous physical work
- Chronic coughing (for example from smoking or chronic lung disease)
- Persistent straining from constipation or difficulty passing urine
- Pregnancy and being overweight
- Previous abdominal surgery (for incisional hernias)
- Increasing age, which weakens connective tissue
How it's diagnosed
Most hernias are diagnosed clinically. The doctor examines the area while you stand and may ask you to cough, which makes the bulge more apparent. In many cases no further test is needed.
When the diagnosis is unclear or the hernia is small, an ultrasound scan can confirm it. A CT or MRI scan is occasionally used for complex, recurrent or internal hernias, and a hiatal hernia is usually identified during a gastroscopy or on imaging done for reflux symptoms.
Treatment options
The definitive treatment for most abdominal-wall hernias is surgical repair, where the protruding tissue is returned to its place and the weak area is reinforced, usually with a mesh. There are two main approaches:
- Open repair – a single incision over the hernia; well established and widely performed.
- Keyhole (laparoscopic) repair – several small incisions, often with a faster return to activity and useful for hernias on both sides or recurrent hernias.
Small, symptom-free hernias may sometimes be watched, but surgery is recommended if symptoms progress or there is any risk of complications. In Singapore, hernia repair in the private sector typically falls within a market range of roughly S$6,000 to S$15,000 depending on the technique, hospital and surgeon; public-hospital costs are lower and subsidised. As hernia repair is an inpatient surgical procedure, it is generally MediSave-claimable up to the applicable surgical withdrawal limits, and may also be covered by MediShield Life or Integrated Shield Plans. Confirm exact figures and claim limits with the hospital and your insurer before surgery.
When to see a doctor & which specialist
See a doctor if you notice any new lump or bulge, even if it is painless, so it can be assessed and a plan made before complications arise. A general surgeon or gastroenterology-linked surgical service usually manages hernia repair.
Seek emergency care immediately – go to A&E or call 995 if a hernia becomes suddenly painful, the bulge turns hard or red and cannot be pushed back in, or you develop nausea, vomiting, fever or are unable to pass wind or stool. These are signs of an obstructed or strangulated hernia, where the trapped tissue may lose its blood supply, and emergency surgery is needed.
For assessment of a hernia and surgical options, see a relevant specialist via our directory of gastroenterologists and GI surgeons in Singapore.
Related guides
- Best Gastroenterology Clinics in Singapore — our editorial shortlist
- gastroenterology clinics directory
- Appendicitis
- Stye & chalazion
- Ear wax removal
- Spondylosis
- Mastitis
Sources
- NHS – Hernia
- Mayo Clinic – Inguinal hernia
- HealthHub Singapore
- SingHealth – General Surgery
- MOH Singapore – MediSave
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