Most hernias reveal themselves as a visible or palpable bulge that becomes more noticeable when you stand up, cough, or strain. The bulge is the defining sign, but not all hernias produce one you can see, and some conditions can mimic the feeling of a hernia. Knowing where to look, what to feel for, and which symptoms signal something urgent can help you figure out what’s going on before you see a doctor.
Where Hernias Typically Appear
A hernia happens when tissue or part of an organ pushes through a weak spot in the surrounding muscle or connective tissue. The location of the bulge tells you what type of hernia you’re dealing with, and certain types are far more common than others.
Inguinal hernias account for about 75% of all hernias and mostly affect men. The bulge shows up in the groin area, on either side of the pubic bone, where part of the bowel pushes into the inguinal canal, a passageway that runs down the inner thigh. Femoral hernias are a less common groin hernia that occurs just below the inguinal canal and are more frequent in women. Umbilical hernias appear at or near the belly button, where intestine pokes through an opening in the abdominal wall. Incisional hernias develop at the site of a previous abdominal surgery, where the wall has weakened over time.
Hiatal hernias are different from all of these. They occur internally, where part of the stomach pushes up through the diaphragm into the chest cavity. There’s no external bulge to find.
What a Hernia Feels Like
The most common first sign is a lump or bulge you can see or feel. With inguinal hernias, people typically notice a bulge near the groin that becomes more obvious when standing, especially while coughing or lifting. The area often has a burning or aching sensation. You may feel pain, discomfort, or a dragging pressure in the groin when bending over, coughing, or picking something up. In men, the protruding tissue can sometimes descend into the scrotum, causing pain and swelling around the testicles.
Not every hernia hurts. Some produce only a painless bulge that comes and goes. Others cause a dull ache that worsens throughout the day as gravity pulls on the protruding tissue. The bulge may flatten or disappear when you lie down, then reappear when you stand. This “reducible” quality is one of the clearest signs you’re dealing with a hernia rather than something else.
Hiatal hernias produce no external bulge at all. Instead, symptoms mimic acid reflux: heartburn, regurgitation, trouble swallowing, chest or abdominal pain, and feeling full shortly after eating. Many small hiatal hernias cause no symptoms and are discovered incidentally during tests for other conditions.
How to Check Yourself
The same technique doctors use during a physical exam can help you spot a hernia at home. Stand in front of a mirror and look at your groin, belly button, and any old surgical scars for visible bulges. Then bear down as if you’re having a bowel movement, or give a strong cough. This increases pressure inside your abdomen and forces any hernia to push outward, making it more visible or easier to feel.
Place your fingers over the area where you suspect a problem and repeat the cough or strain. You’re feeling for a soft bulge or an impulse, a brief push against your fingertips that comes and goes with the increase in pressure. If you feel that impulse, a hernia is likely. If no bulge appears even with repeated straining, a hernia is unlikely at that site.
For groin hernias specifically, the bulge tends to appear just above or alongside the crease where your thigh meets your torso. Check both sides, since hernias can occur on either one. Run your fingers slowly along the inguinal crease while coughing and note any asymmetry between the two sides.
Detecting Hernias in Babies and Children
Infants and young children can’t describe their symptoms, so you have to watch for behavioral clues alongside visible signs. Look for a lump or swelling near the groin or belly button that gets bigger when the child cries, coughs, or strains during a bowel movement. The bulge may shrink or disappear when the baby is calm and relaxed.
Other signs include unexplained fussiness, tenderness when you gently touch the area, and reluctance to move. Epigastric hernias, which occur between the belly button and chest, sometimes only become visible when an infant is straining. If you notice a persistent or worsening bulge, it’s worth having a pediatrician examine the area, since some childhood hernias require surgical repair to prevent complications.
When Imaging Is Needed
A physical exam is usually all that’s needed to confirm a hernia. But when the bulge is small, intermittent, or deep inside the body, imaging can pin down what’s going on.
Ultrasound is the most common first-line imaging tool for groin hernias. It’s noninvasive, inexpensive, and effective. When performed by a specialist using high-frequency probes, ultrasound can detect femoral and small groin hernias with a sensitivity above 97%. It also works well for abdominal wall hernias: dynamic ultrasound, where the technician watches in real time as you strain, catches incisional hernias with about 98% sensitivity.
MRI offers the best accuracy for occult (hidden) inguinal hernias, correctly identifying about 91% of cases with a 92% specificity, meaning it rarely produces false positives. It’s typically reserved for cases where symptoms persist but ultrasound is inconclusive. CT scans are excellent for diagnosing deep pelvic hernias and rare types like Spigelian hernias, where they’ve shown 100% sensitivity in surgical confirmation studies. For hiatal hernias, an upper endoscopy, where a thin camera is passed down the throat, is the standard approach.
Conditions That Mimic a Hernia
Several conditions can produce lumps, swelling, or groin pain that feel like a hernia but aren’t. Knowing the differences can save you unnecessary worry or help you recognize when something else is going on.
- Muscle strains can cause soreness and even a bulge in the abdominal or groin area, but the pain worsens with movement rather than producing a consistent lump that appears with straining.
- Swollen lymph nodes in the groin feel like soft, movable lumps under the skin. They tend to be more tender than hernias, and they’re often accompanied by fever, fatigue, or signs of infection.
- Lipomas are benign fatty lumps just beneath the skin. They’re soft, slow-growing, and painless. Unlike hernias, they don’t change size when you cough or strain.
- Testicular conditions like torsion or epididymitis cause scrotal swelling and pain that can look like a hernia. Torsion causes sudden, severe pain and is a medical emergency.
- Ovarian cysts can cause a palpable mass or pain in the lower abdomen, but the pain tends to be sharp and localized, especially if a cyst ruptures.
The key distinguishing feature of a hernia remains the bulge that changes with position or pressure. A lump that gets bigger when you stand and cough and smaller when you lie down is behaving like a hernia. A lump that stays the same size regardless of position is more likely something else.
Emergency Signs to Act On Immediately
Most hernias are uncomfortable but not dangerous. A strangulated hernia is the exception. This happens when the blood supply to the trapped tissue gets cut off, and it requires emergency surgery.
The warning signs are distinct: sudden, severe pain in the abdomen or groin that keeps getting worse and doesn’t let up, nausea and vomiting, and skin color changes around the bulge. The skin may first turn pale, then become reddish or darker than normal. A bulge that was previously reducible (you could push it back in or it would flatten when lying down) becomes firm, tender, and stuck in place. If you notice this combination of symptoms, go to the emergency room. Strangulated hernias can cause permanent tissue damage within hours.