Hernia

Overview

A hernia happens when part of an organ or fatty tissue pushes through a weak spot in the muscle or tissue that normally holds it in place. It often shows up as a bulge you can see or feel under the skin. Most hernias appear in the belly area or in the groin. Some are small and cause no trouble, while others can be uncomfortable and may need treatment. A hernia is not a growth or a lump of flesh — it is your own tissue in a place it should not be.

Yes. Hernias are very common. Surgery to repair a hernia is one of the most frequently done operations worldwide. Millions of people live with a hernia, and most do well with the right care.

Hernias can affect anyone at any age, including babies and children. In adults they become more common as people get older, because muscle and tissue get weaker over time. Groin hernias are much more common in men. Hernias around the belly button are more common in babies and in women who have had pregnancies. People who do heavy physical work, have a long-term cough, or strain often are also more likely to get one.

Symptoms

Common symptoms

• A bulge or swelling under the skin, often in the groin, belly button, or upper stomach area
• The bulge may get bigger when you stand, cough, laugh, or strain, and may flatten when you lie down
• A dull ache or heaviness in the area, especially after standing a long time or at the end of the day
• Mild pain or discomfort when lifting, bending, or coughing
• A soft, squishy feeling when you press on the bulge — it may go back in when pushed gently
• Sometimes no symptoms at all, if the hernia is small

Symptoms in children

• A bulge in the groin or around the belly button that appears when your child cries, coughs, or strains
• The bulge may be soft and painless and may disappear when your child relaxes or sleeps
• In babies, a swelling around the belly button that sticks out more when they cry
• Fussiness or discomfort in some children, though many feel nothing at all
• In boys, sometimes a swollen scrotum on one side

Symptoms in older adults

• A bulge that has slowly grown over months or years
• More aching or dragging discomfort, often worse after activity
• Hernias that are linked to long-term constipation, a lasting cough, or prostate problems that make you strain to pass urine
• Bulges that are harder to push back in, because muscle tone is lower and tissue is weaker
• A higher chance of the hernia getting trapped, so changes should be checked early

Causes

Main causes

• A weak spot in the muscle or connective tissue of the belly wall — sometimes present from birth
• Extra pressure inside the belly, which pushes tissue through the weak spot
• Pressure can come from coughing, sneezing, straining on the toilet, lifting heavy things, or pregnancy
• In children, a small opening in the muscle that did not close fully before birth

Risk factors

• Getting older — muscles and tissue lose strength over time
• Being male, for groin hernias
• A family history of hernias
• A long-term cough, such as from smoking or a lung condition
• Constipation and straining to pass stools
• Heavy lifting at work or in sport, especially with poor technique
• Being overweight, which raises pressure inside the belly
• Pregnancy, especially more than one pregnancy
• Previous surgery on the belly or groin
• Smoking, which weakens connective tissue and slows healing
• Being born early, or having certain conditions that affect connective tissue
• Fluid build-up in the belly from liver disease

When to see a doctor

See a doctor urgently if:

• You have a bulge that is suddenly very painful, hard, or cannot be pushed back in — call your local emergency number if you also feel very unwell, have vomiting, or cannot pass wind or stools
• The bulge changes colour, feels hot, or the skin over it looks red or purple
• You have a new groin bulge with pain, or you feel sick and bloated
• Your baby or child has a hard, tender groin swelling, or is crying and cannot be comforted

Book a routine appointment if:

• You notice a new bulge anywhere on your belly or in your groin
• A bulge you already have gets bigger, more uncomfortable, or easier to see
• The bulge aches during the day or interferes with work, sport, or daily tasks
• You are not sure whether the lump you feel is a hernia
• You have a hernia and are thinking about treatment options

Diagnosis

In most cases, a doctor can tell whether you have a hernia by talking to you and examining the area. They will look at the bulge, feel it while you are standing and lying down, and may ask you to cough or strain so they can see how it behaves. Sometimes they can gently push it back in. This simple check is often all that is needed.

Tests that may be done

• A physical exam — the main way hernias are found
• Ultrasound scan — a painless scan using sound waves, often used when the bulge is not clear or the area is tender
• CT scan — a more detailed scan, used if the diagnosis is unclear or if there may be a complication
• MRI scan — occasionally used for unusual or complex cases
• Blood tests or urine tests — not for the hernia itself, but sometimes to check your general health or look for causes of straining

What to expect at your appointment

The appointment is usually short and simple, and you can stay fully dressed apart from the area being checked. Your doctor will ask when you first noticed the bulge, whether it hurts, and whether it changes size. You may be asked to stand up and cough. It should not be painful, though it may feel a little uncomfortable if the area is tender. You will usually leave with a clear answer, advice, and a plan for what to do next.

Treatment

Treatment depends on your symptoms, the type of hernia, your age, and your general health. Small hernias that cause little trouble are often simply watched, with advice on how to avoid making them worse. Hernias that are uncomfortable, growing, or at risk of getting trapped are usually repaired with surgery. There is no medicine that makes a hernia go away, but there is a lot you can do to stay comfortable and reduce strain.

Self-care at home

• Avoid heavy lifting where you can — and if you must lift, bend your knees, keep your back straight, and breathe out as you lift
• Treat constipation early: eat plenty of fibre, drink enough water, and do not strain on the toilet
• If you smoke, getting support to stop is one of the best things you can do — it lowers coughing and helps tissue heal
• Try to keep to a healthy weight, which reduces pressure inside your belly
• Support the bulge gently with your hand when you cough or sneeze
• Ask your doctor or pharmacist about supportive belts or trusses — some people find them helpful, but they are not a cure and should be fitted properly
• Keep moving gently — regular walking is fine and helps your circulation and bowels
• Note any changes in the bulge, such as it getting harder to push back, and tell your doctor

Medical treatments

There are no medicines that repair a hernia. Your doctor may suggest a supportive belt or truss to hold the bulge in place and ease discomfort while you decide on other options. If you have a condition that raises pressure inside the belly — such as a long-term cough, constipation, or prostate trouble — treating that condition can make you much more comfortable. Painkillers bought from a pharmacy can help with mild aches, but ask your pharmacist or doctor first, especially if you take other medicines or have health conditions. Surgery is the only treatment that fixes the hole in the muscle.

When is surgery considered?

Surgery is usually suggested when the hernia is painful or growing, when it is getting harder to push back, or when it affects your daily life. It may also be advised for certain hernias in children, and for hernias at higher risk of becoming trapped. The two main approaches are open repair (one larger cut) and keyhole surgery (laparoscopic repair, using small cuts and a camera). Both usually use a piece of mesh to strengthen the weak spot. Many repairs are done as day surgery. Your surgical team will explain the benefits, the risks, and what recovery looks like for you.

Living with this condition

Most people with a hernia carry on with normal life. You may notice the bulge more at the end of a long day, after standing, or after activity, and it may ease when you lie down. Wearing loose, comfortable clothing and supporting the area when you cough can help. If a task makes the bulge ache, that is a signal to pace yourself or ask your doctor for advice.

Lifestyle tips

• Build gentle strength in your core with guidance from a physiotherapist or a qualified instructor
• Break up long periods of standing or heavy work with short rests
• Stay active with walking, swimming, or other low-strain activity
• Avoid lifting awkward or very heavy loads, and share the load where you can
• Keep your weight in a comfortable range
• Get help to stop smoking — it reduces coughing and supports healing
• Manage constipation with fibre, fluids, and regular meal times

Diet and exercise

A balanced diet with plenty of fibre — fruit, vegetables, wholegrains, beans, and lentils — plus enough water helps keep stools soft so you do not need to strain. Try to eat regular meals and take your time in the bathroom. For exercise, gentle and regular beats hard and occasional. Walking, swimming, and light cycling are usually comfortable. Ask a physiotherapist or your doctor about safe core exercises, and avoid heavy weights or hard straining until you have been advised. If you have had surgery, follow your team's recovery advice about when to return to exercise.

Mental health and emotional wellbeing

A bulge you can see and feel can be worrying, and it is completely normal to feel anxious about it, especially while you wait for an appointment or decide about surgery. Some people feel self-conscious about how the bulge looks. Talk about how you feel with someone you trust, and tell your doctor if worry is affecting your sleep, mood, or daily life. Support is available, and you do not have to manage alone.

Prevention

Not all hernias can be prevented — some are linked to how your body was built before birth. But you can lower your chances of getting one, or of an existing hernia getting worse, by reducing pressure and strain on your belly. The main steps are avoiding heavy lifting with poor technique, keeping your bowels regular, staying at a healthy weight, and not smoking.

Vaccines

There is no vaccine for hernias.

Screening programmes

There is no routine screening programme for hernias. Hernias are usually found when you notice a bulge or when a doctor examines you for another reason. If you notice a new lump, getting it checked is the best step.

Complications

If left untreated

• The hernia may slowly get bigger and more uncomfortable
• The hernia can become trapped (doctors call this incarcerated) and harder to push back in
• A trapped hernia can have its blood supply cut off (called strangulation) — this is an emergency and needs immediate treatment
• A trapped hernia can cause a blocked bowel, with vomiting and no bowel movements
• Long-standing discomfort that limits work, exercise, or daily activities

Long-term outlook

The outlook for most people with a hernia is good. Many small hernias stay quiet for years and simply need watching. When repair is needed, surgery is very common, well understood, and usually successful, with most people back to normal activities within a few weeks. Knowing the warning signs of a trapped hernia means you can act quickly if something changes — and most people with a hernia live full, active lives.

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