What Is an Incisional Hernia After Surgery?

An incisional hernia is a hernia that develops at or near the site of a previous surgical incision. It occurs when tissue — a part of the intestine, or abdominal fat — pushes through a weakened area in the abdominal wall. It may develop weeks, months, or even years after abdominal surgery.

Understanding what an incisional hernia is helps patients recognise the early warning signs and seek advice at the right time. Some cause only mild discomfort at first; others gradually enlarge or lead to complications if left unevaluated.

At Billroth Hospitals, Shenoy Nagar, Chennai, Dr Kumaragurubaran — a Senior Surgical Gastroenterologist and Advanced Laparoscopic, GI and Robotic Surgeon with over 28 years of experience — evaluates a wide range of gastrointestinal and abdominal surgical conditions, including incisional hernia.

What causes an incisional hernia after surgery?

An incisional hernia develops when the abdominal wall does not regain its full strength at the site of a previous incision. The area can remain vulnerable even after the external wound has healed.

Factors that contribute include:

• Wound infection — infection after surgery interferes with normal tissue healing.
• Increased abdominal pressure — persistent coughing, constipation or repeated straining puts extra load on the abdominal wall.
• Heavy lifting — lifting before adequate recovery stresses healing tissue.
• Obesity — excess body weight places additional pressure on the abdominal muscles. See obesity and weight-loss surgery.
• Diabetes and impaired healing — certain medical conditions affect wound healing and tissue repair.
• Previous abdominal surgeries — repeated incisions in the same area contribute to abdominal wall weakness.

Not every patient with these risk factors develops a hernia. The likelihood depends on the original surgery, the healing process and overall health.

What are the symptoms of an incisional hernia?

Recognising the symptoms matters for early assessment. They vary with the size of the hernia and whether the protruding tissue can move back into the abdominal cavity.

• A visible bulge near an old surgical scar
• Swelling that becomes more noticeable while standing, coughing or straining
• Discomfort or a pulling sensation around the incision
• Pain during physical activity or when lifting
• A feeling of pressure or heaviness in the abdomen
• A bulge that gradually increases in size

Some patients have an incisional hernia without significant pain. The absence of discomfort does not mean the condition can be ignored.

Seek emergency medical attention if the bulge suddenly becomes very painful, firm or discoloured, or if you develop vomiting, abdominal swelling, or an inability to pass stool or gas. These may indicate an incarcerated or strangulated hernia, or bowel obstruction, which needs urgent treatment.

How to identify an incisional hernia

It begins with noticing changes around a previous surgical scar. A new bulge, persistent swelling or discomfort near the incision should be assessed by a qualified professional.

During examination the doctor assesses the location and size of the bulge, and checks whether it becomes more prominent on coughing or standing. Depending on the findings, investigations may include:

• Physical examination — identifies the location and characteristics of the suspected hernia.
• Ultrasound — helps assess the abdominal wall and identify a hernia.
• CT scan — gives detailed information about the defect, its contents and the surrounding structures where that is needed.

Which investigation is appropriate depends on the symptoms, the medical history and the examination findings.

Can an incisional hernia heal on its own?

This is one of the most common questions patients ask. In adults, an established incisional hernia generally does not close permanently without treatment. The weakened area in the abdominal wall remains.

Small hernias that are not causing symptoms may sometimes be monitored, depending on overall health and the risk of complications. But monitoring does not repair the defect.

A reduction in discomfort should not be taken to mean the hernia has healed. A medical evaluation establishes whether observation or surgical treatment is appropriate.

Recovery and prevention

Not every incisional hernia can be prevented, but some measures support healing after abdominal surgery and reduce unnecessary strain on the incision:

• Follow your surgeon's instructions on activity and recovery
• Avoid heavy lifting until your treating doctor confirms it is safe
• Maintain a healthy body weight where possible
• Manage constipation, to reduce straining during bowel movements
• Seek advice for persistent coughing or anything else that raises abdominal pressure
• Follow wound-care instructions and report any sign of infection
• Attend follow-up appointments as advised

Patients who have already developed a hernia should get specific advice rather than relying on preventive measures alone.

When is treatment necessary?

Treatment decisions depend on the hernia's size, the symptoms, the effect on daily activities and the risk of complications.

For some patients a doctor recommends observation with appropriate follow-up. For others, surgical repair is advised — particularly if the hernia is enlarging, painful, or affecting everyday life.

Repair may involve open surgery or a minimally invasive laparoscopic approach. The choice depends on the size and location of the defect, previous operations and the patient's medical condition. Laparoscopic techniques use smaller incisions and may offer advantages for suitable patients, though recovery and outcomes vary. No single approach suits every hernia.

Discuss the benefits, risks, recovery expectations and alternatives with your surgeon before deciding. See the full range of hernia surgery offered, including inguinal, umbilical and hiatal hernia repair.

Consult Dr Kumaragurubaran at Billroth Hospitals, Chennai

Dr Kumaragurubaran is a Senior Surgical Gastroenterologist and Advanced Laparoscopic, GI and Robotic Surgeon at Billroth Hospitals, Shenoy Nagar, Chennai, with over 28 years of clinical experience and more than 20,000 laparoscopic surgeries performed.

His qualifications include MBBS, MS (General Surgery), MRCS (England), FIAGES (Gastro), FALS and a Diploma in Advanced Laparoscopy. His clinical expertise covers abdominal wall hernias, gastrointestinal disorders, laparoscopic procedures, colorectal surgery and complex gastrointestinal conditions.

If you have noticed a bulge or discomfort around a previous surgical incision, book an assessment or get in touch to understand the likely cause and the appropriate next steps.

Frequently asked questions

How long after surgery can an incisional hernia develop?

An incisional hernia may appear weeks, months or years after abdominal surgery. The timing varies with wound healing, surgical factors and individual risk factors.

Is an incisional hernia always painful?

No. Some cause no pain and are first noticed as a bulge near a surgical scar. Pain, increasing swelling or any change in the bulge should be assessed by a doctor.

Can exercise make an incisional hernia worse?

Activities that increase abdominal pressure can aggravate symptoms. Seek medical advice before starting strenuous exercise or lifting weights if you suspect an incisional hernia.

Is surgery the only treatment for an incisional hernia?

Surgery is the definitive way to repair the abdominal wall defect, but not every patient needs immediate surgery. Depending on the circumstances a doctor may recommend monitoring, or discuss the surgical options.

When should I seek emergency care for an incisional hernia?

Seek immediate medical attention for sudden or severe pain, a firm or discoloured bulge, vomiting, abdominal swelling, or difficulty passing stool or gas. These may indicate a serious complication.