Inguinal Hernia:
When Surgery Is Needed — and When You Can Wait

1. What is an inguinal hernia?

With an inguinal hernia, the abdominal lining (peritoneum) bulges outwards through a gap in the abdominal wall in the groin area. This so-called hernial sac can contain fatty tissue or loops of bowel. The German name, Leistenbruch (literally “groin break”), can be misleading: it does not refer to a broken bone but to a protrusion of the abdominal contents.^¹

The groin is a natural weak spot: this is where the inguinal canal runs, carrying the spermatic cord to the testicle in men and a supporting ligament of the womb in women. That is why men are affected considerably more often. An inguinal hernia does not heal on its own — the gap remains and can become larger over time.^¹,²

2. Types: direct, indirect, femoral hernia

The exact classification is often only made during the operation. For the decision on whether and when to operate, what counts most are the symptoms, your sex and whether it is a femoral hernia.^¹

3. Symptoms and warning signs

• Swelling in the groin — more noticeable when standing, coughing or straining, often gone when lying down
• Pulling, pressure or burning in the groin, often worse towards the evening or after exertion
• Swelling in the scrotum with larger indirect hernias
• No symptoms at all — this is common too; some people only notice the bulge by chance

Typically, the contents of the hernia can be pushed back with gentle pressure while lying down. The problem arises when exactly that no longer works.

4. Causes and risk factors

An inguinal hernia develops from a congenital or acquired weak spot combined with pressure from inside the abdomen. Known risk factors include:^¹,³

• Male sex and age — the most important factor; connective tissue loses firmness with age.
• Family predisposition — inguinal hernias cluster in some families, and also with certain connective tissue disorders.
• A previous hernia — anyone who has had an inguinal hernia on one side is more likely to develop one on the other side too.
• Chronic cough — for example with COPD or in smokers.
• Frequent straining — with constipation, or with difficulty passing urine due to an enlarged prostate.
• Previous operations — for example removal of the prostate or procedures in the lower abdomen.

Whether heavy lifting at work or during sport actually causes an inguinal hernia is disputed. Often the strain simply makes an existing hernia noticeable.

5. Diagnosis

A physical examination is usually enough to recognise an inguinal hernia. Imaging is only needed if the findings are unclear.^¹,²

• Consultation: Since when, how severe, with what kind of exertion? Have you had a hernia before? Which medicines do you take, especially blood thinners?
• Examination standing and lying down: The doctor feels your groin while you cough or strain.
• Ultrasound: if the findings are unclear, if there are symptoms without a palpable bulge, or to tell a hernia apart from lymph nodes and fluid collections.
• MRI or CT: only in exceptional cases, for example in athletes with unexplained groin pain or if complications are suspected.

The main conditions that need to be ruled out are swollen lymph nodes, fluid in the scrotum (hydrocele), varicose veins of the spermatic cord and hip problems. A hard, painless lump on the testicle itself is not a hernia and should be checked promptly by a urologist — see testicular cancer.

6. Surgery or watchful waiting?

The only treatment that gets rid of an inguinal hernia is surgery. The question is therefore less whether than when — and, for one group of patients, whether it is needed at all. The international guideline makes a clear distinction:^¹

If you choose to wait, you should know the warning signs of a trapped hernia and see your doctor again if the symptoms increase. The decision is made by your treating practice together with you — depending on your symptoms, age, other conditions and your priorities.

7. Surgical procedures compared

In adults, the gap in the abdominal wall is nowadays usually reinforced with a synthetic mesh, because the hernia then comes back less often than with stitches alone. Two approaches are established:^¹,²

Which procedure is right depends less on “better or worse” than on the type of hernia, previous operations, fitness for anaesthesia and the hospital’s experience. Many procedures are done as day surgery or with a short hospital stay.

Risks put honestly into perspective

The operation is considered safe, but it is not without consequences. Bruising and fluid collections in the groin are common and usually resolve on their own. The most important long-term consequence is persistent groin pain: some patients still feel discomfort months later, while severely disabling pain is rare. A recurrence is rare with mesh in experienced hands. Older men with a large prostate may temporarily be unable to pass urine after the anaesthetic.^¹,³

8. Medicines around the operation

For everything to run smoothly, the hospital needs to know your complete medication list. Some groups of medicines need particular attention:

• Blood thinners: Whether aspirin, clopidogrel, direct oral anticoagulants or phenprocoumon are paused, for how long and whether bridging is needed is decided individually by your practice. Aspirin is often continued for groin hernia operations.
• Diabetes medicines: Certain agents, such as SGLT2 inhibitors, are often paused for a few days before an operation; insulin is also usually adjusted on the day of surgery.
• Weight-loss and diabetes injections: GLP-1 receptor agonists slow down stomach emptying and should always be mentioned at the pre-anaesthetic consultation.
• Cortisone and immunosuppressants: can impair wound healing — do not stop them, but do mention them.

More on this in the guide Medications before surgery.

Painkillers after the procedure

After the operation, painkillers such as ibuprofen, paracetamol or metamizole are usually prescribed on a fixed schedule for a few days — taken regularly, they work better than if you wait until the pain is severe. Opioids are rarely needed, and only briefly; they cause constipation, and straining is unpleasant after groin surgery. A mild laxative such as macrogol can then be useful. Which combination suits you, especially if you have stomach, kidney or heart conditions, is decided by your treating practice.

9. Special cases: women, children, pregnancy

Women

Inguinal hernias are less common in women, but they are more often overlooked or mistaken for something else. What looks like an inguinal hernia is more often a femoral hernia, which becomes trapped more easily. The guideline therefore recommends prompt surgery for women, preferably minimally invasive, because this also allows a femoral hernia to be detected and repaired at the same time.^¹

Children

In children, an inguinal hernia is almost always congenital: a channel that should have closed before birth has stayed open. It shows up as a swelling in the groin or scrotum, often when the child cries. Because it does not close on its own and can become trapped, especially in babies, surgery is usually carried out soon after diagnosis — in children without mesh. A hard, painful swelling in a restless child who is vomiting is an emergency.^²

Pregnancy

During pregnancy, varicose veins along the round ligament of the womb can mimic an inguinal hernia. A genuine hernia without complications is usually only operated on after the birth; if it becomes trapped, the same emergency rules apply.

10. Everyday life and returning to activity

In the past, weeks of lifting restrictions were common after groin surgery. According to current evidence, blanket rest periods after a mesh repair are usually not necessary: normal activities are allowed as soon as the pain permits. Your hospital’s individual instructions take priority, however.^¹

• Get moving early — walking on the day of surgery or the day after helps prevent thrombosis and speeds up recovery.
• Increase activity as you feel able — office work is often possible after a few days, heavy physical work and strength training later.
• Avoid constipation — drink enough, eat plenty of fibre and take action early if you are on opioids; see constipation.
• Keep an eye on the wound — have increasing redness, warmth, fever or leaking fluid checked by a doctor; more under poor wound healing.
• Only drive once you are off strong painkillers — and when you could manage an emergency stop without pain.
• Take persistent pain seriously — if your groin is still clearly painful after three months, a targeted assessment makes more sense than long-term painkillers.

If you have decided to wait, you can usually live without major restrictions: sport and work are allowed as long as they do not make the symptoms worse. What matters is knowing the signs of a trapped hernia.

Well prepared for groin surgery — with brite

Your medication plan for the pre-anaesthetic consultation, plus reminders for pauses and painkillers. Free.

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