A hiatal hernia occurs when part of your stomach pushes upward through your diaphragm. Your diaphragm normally has a small opening (hiatus) through which your food tube (esophagus) passes on its way to connect to your stomach. The stomach can push up through this opening and cause a hiatal hernia.
In most cases, a small hiatal hernia doesn't cause problems, and you may never know you have a hiatal hernia unless your doctor discovers it when checking for another condition.
But a large hiatal hernia can allow food and acid to back up into your esophagus, leading to heartburn. Self-care measures or medications can usually relieve these symptoms, although a very large hiatal hernia sometimes requires surgery.
Most small hiatal hernias cause no signs or symptoms. However, larger hiatal hernias can cause signs and symptoms such as:
Chest or abdominal pain
Feeling especially full after meals
Vomiting blood or passing black stools, which may indicate gastrointestinal bleeding
When to see a doctor
Make an appointment with your doctor if you have any persistent signs or symptoms that worry you.
A hiatal hernia occurs when weakened muscle tissue allows your stomach to bulge up through your diaphragm. It's not always clear why this happens, but pressure on your stomach and age-related changes in your diaphragm may contribute to the formation of a hiatal hernia.
How a hiatal hernia forms
Your diaphragm is a large, dome-shaped muscle that separates your chest cavity from your abdomen. Normally, your esophagus passes into your stomach through an opening in the diaphragm called the hiatus.
Hiatal hernias occur when the muscle tissue surrounding this opening becomes weak, and the upper part of your stomach bulges up through the diaphragm into your chest cavity.
Possible causes of hiatal hernia
Hiatal hernia could be caused by:
Injury to the area
Being born with an unusually large hiatus
Persistent and intense pressure on the surrounding muscles, such as when coughing, vomiting or straining during a bowel movement, or while lifting heavy objects
Make an appointment with your family doctor or a general practitioner if you have signs or symptoms that worry you.
If you've been diagnosed with a hiatal hernia and your problems persist after you make lifestyle changes and start medication, ask your primary doctor for a referral to a doctor who specializes in digestive diseases (gastroenterologist).
What you can do
Because appointments can be brief, and because there's often a lot of ground to cover, it's a good idea to be well-prepared. To get ready, try to:
Be aware of any pre-appointment restrictions. At the time you make the appointment, ask if there's anything you need to do in advance, such as restrict your diet.
Write down any symptoms you're experiencing, including any that may seem unrelated to the reason for which you scheduled the appointment.
Write down key personal information, including any major stresses or recent life changes.
Make a list of all medications, vitamins or supplements that you're taking.
Consider taking a family member or friend along. Sometimes it can be difficult to absorb all the information provided during an appointment. Someone who accompanies you may remember something that you missed or forgot.
Write down questions to ask your doctor.
Questions to ask your doctor
Your time with your doctor is limited, so preparing a list of questions can help you make the most of your time together. List your questions from most important to least important in case time runs out.
For a hiatal hernia, some basic questions to ask your doctor include:
What caused my hiatal hernia?
Will I need treatment for my hiatal hernia?
Do I need more tests?
What are my treatment options?
What are the benefits and risks of each option?
I have other health conditions. How can I best manage them along with my hiatal hernia?
Are there any restrictions that I need to follow?
Should I see a specialist? What will that cost, and will my insurance cover it?
Is there a generic alternative to the medicine you're prescribing for me?
Are there brochures or other printed material that I can take with me? What websites do you recommend?
What will determine whether I should plan for a follow-up visit?
In addition to the questions that you've prepared to ask your doctor, don't hesitate to ask other questions that occur to you during your appointment.
What to expect from your doctor
Your doctor is likely to ask you a number of questions. Being ready to answer them may allow more time to cover other points you want to address. Your doctor may ask:
When did you first begin experiencing symptoms?
Have your symptoms been continuous or occasional?
How severe are your symptoms?
What, if anything, seems to improve your symptoms?
What, if anything, appears to worsen your symptoms?
A hiatal hernia is often discovered during a test or procedure to determine the cause of heartburn or chest or upper abdominal pain. Such tests or procedures include:
Blood testing. Your doctor may recommend a complete blood count to check for anemia due to blood loss.
An esophagram (barium swallow). During this procedure, you drink a chalky liquid containing barium that coats your upper digestive tract. This provides a clear silhouette of your esophagus, stomach and the upper part of your small intestine (duodenum) on an X-ray.
Endoscopy. During an endoscopy exam, your doctor passes a thin, flexible tube equipped with a light and video camera (endoscope) down your throat and into your esophagus and stomach to check for inflammation.
Manometry. During this test, a thin, pressure-sensitive tube (catheter) is passed through your nose, down through the esophagus and into the stomach. The catheter then measures pressure and movement inside the esophagus.
Most people with a hiatal hernia don't experience any signs or symptoms and won't need treatment. If you experience signs and symptoms, such as recurrent heartburn and acid reflux, you may require treatment, which can include medications or surgery.
Medications for heartburn
If you experience heartburn and acid reflux, your doctor may recommend medications, such as:
Antacids that neutralize stomach acid. Over-the-counter antacids, such as Gelusil, Maalox, Mylanta, Rolaids and Tums, may provide quick relief.
Medications to reduce acid production. Called H-2-receptor blockers, these medications include cimetidine (Tagamet HB), famotidine (Pepcid AC), nizatidine (Axid AR) and ranitidine (Zantac 75). Stronger versions of these medications are available in prescription form.
Medications that block acid production and heal the esophagus. Proton pump inhibitors block acid production and allow time for damaged esophageal tissue to heal.
Over-the-counter proton pump inhibitors include lansoprazole (Prevacid 24HR) and omeprazole (Prilosec OTC). Stronger versions of these medications are available in prescription form.
Surgery to repair a hiatal hernia
In a small number of cases, a hiatal hernia may require surgery. Surgery is generally reserved for emergency situations, which are rare, and for people who aren't helped by medications to relieve heartburn and acid reflux.
An operation for a hiatal hernia may involve pulling your stomach down into your abdomen and making the opening in your diaphragm smaller, reconstructing a weak esophageal sphincter, or removing the hernia sac.
In some cases, surgery is done using a single incision in your chest wall (thoracotomy) or abdomen (laparotomy). In other cases, your surgeon may insert a tiny camera and special surgical tools through several small incisions in your abdomen. The operation is then performed while your surgeon views images from inside your body that are displayed on a video monitor (laparoscopic surgery).
Some alternative medicine practitioners claim to have discovered a way to cure a hiatal hernia by pushing the stomach back to its normal position below the diaphragm. Practitioners may use their hands to apply pressure to the abdomen and manipulate the stomach.
There's no evidence that such manipulation works to cure hiatal hernia. No clinical trials of the technique have been conducted.