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Hernia Development

A hernia is the result of a hole or tear in the abdominal wall fascia. Fascia is a layer (or sheet) of connective tissue in everyone’s abdominal wall that extends from the chest area down below the groin. The fascia layer lies in between the muscles of your abdominal wall. Fascia is important because it is the strength layer of your abdominal wall and is essentially responsible for keeping the contents of the abdomen in place. A breach (tear) or hole in this connective tissue is, by definition, a hernia. Hernias form as a result of a continued weakening of the abdominal fascia until a hole develops much like a bulge forming in a tire from repeated wear and tear. This weakening or tear allows for the inner lining of the abdomen and associated abdominal contents (intestine or other organs) to push through the hole, leading to a lump or bulge.

hernia development

A hernia, by definition, is the actual hole in the fascial layer. The bulge occurs when the abdominal contents come through the hole. Any activity that increases the pressure in the abdomen, such as exercise, straining, standing, or walking, increases the pressure in the abdomen and, thus, can push the abdominal contents through the hole, resulting in a bulge or lump. In most people, when they lie down, the bulge or lump disappears. This is because, when lying down, the abdominal pressure is reduced, and the contents of the hernia fall back into the abdominal cavity. This is called a reducible hernia, which means that the contents of the hernia can still be pushed back into the abdomen. As hernias progress, however, the portion of the small intestine retreating into the hernia can become trapped. This is called a non-reducible or incarcerated hernia and can be particularly painful.

A hernia in of itself does not cause pain. However, when abdominal contents protrude through the hole, discomfort or pain may result as abdominal contents get pinched or momentarily stuck in the hernia. A lump or bulge may also be noticeable. However, if the hernia is small, one may have symptoms without a noticeable bulge or lump

Why do hernias form?

The abdominal wall has several areas of congenital weakness – a weakness that has been present from birth.

Hernias can occur anywhere in the abdomen. However, they are most common in the groin (inguinal hernia) and navel (umbilical hernia) since they are the weakest parts of the abdominal fascia. Once a hernia forms, there can be no improvement without surgical intervention. A hernia cannot repair itself. One the hole (or hernia) forms, fascia will not regrow to close the hole.

causes of inguinal hernia

 

Over the course of our lives, areas of weakness can also form as a result of various conditions including:

  • Obesity
  • Injuries
  • Pregnancy
  • Age
  • Colon cancer
  • Prostate problems
  • Straining
  • Exercise
  • Surgery

The following can aggravate a hernia or lead to its discovery:

  • Heavy lifting
  • Twisting
  • Pulling
  • Straining of muscles
  • Constipation
  • Persistent Cough (from asthma or smoking, for example)

One should be on the lookout for protrusions in the abdomen or any persistent discomfort or pain after physical exertion. However, many patients do not know they have a hernia and will only find out from a routine physical examination by their primary physician. While hernias can progress slowly, it is best not to ignore any discomfort, pain or bulge in the abdominal wall.

Further Resources:

Types of Hernias (Inguinal, Umbilical, Femoral, Hiatal, Incisional)
Symptoms of a Hernia 
Hernia Repair Surgery
Hernia Surgery Aftercare

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