Gastroesophageal reflux disease (GERD) is a more serious form of common gastroesophageal reflux (GER). GER occurs when the lower esophageal sphincter opens spontaneously or does not close properly and stomach contents rise up into the esophagus. GER is also called acid reflux because digestive juices rise up with the food.
When acid reflux occurs, food or fluid can be tasted in the back of the mouth. When refluxed stomach acid touches the lining of the esophagus it may cause a burning sensation in the chest or throat called heartburn or acid indigestion. Occasional GER is common and does not necessarily mean one has GERD. Persistent reflux that occurs more than twice a week is considered GERD, and it can eventually lead to more serious health problems. People of all ages can have GERD.

Causes and symptoms
The main symptom of GERD in adults is frequent heartburn, also called acid indigestion—burning-type pain in the lower part of the mid-chest, behind the breast bone, and in the mid-abdomen. Most children under 12 (and some adults) have GERD without heartburn. Instead they may experience a dry cough, asthma symptoms, or trouble swallowing.
The reason some people develop GERD is still unclear. However, research shows that in people with GERD, the LES relaxes while the rest of the esophagus is working. Anatomical abnormalities such as a hiatal hernia may also contribute to GERD. A hiatal hernia occurs when the upper part of the stomach and the LES move above the diaphragm, the muscle wall that separates the stomach from the chest. Normally, the diaphragm helps the LES keep acid from rising up into the esophagus. When a hiatal hernia is present, acid reflux can occur more easily. A hiatal hernia can occur in people of any age and is most often a normal finding in otherwise healthy people over age 50. Most of the time, a hiatal hernia produces no symptoms.

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Treatment
Depending on the severity of your GERD, treatment may involve one or more of the following lifestyle changes, medications, or surgery.

• If you smoke, stop.
• Avoid foods and beverages that worsen symptoms.
• Lose weight if needed.
• Eat small, frequent meals.
• Wear loose-fitting clothes.
• Avoid lying down for 3 hours after a meal.
• Raise the head of your bed 6 to 8 inches by securing wood blocks under the bedposts. Just using extra pillows will not help.

Your health care provider may recommend over-the-counter antacids or medications that stop acid production or help the muscles that empty your stomach.

• Antacids are usually the first drugs recommended to relieve heartburn and other mild GERD symptoms.
• Foaming agents, such as Gaviscon, work by covering your stomach contents with foam to prevent reflux.
• H2 blockers, such as cimetidine (Tagamet HB), famotidine (Pepcid AC), nizatidine (Axid AR), and ranitidine (Zantac 75), decrease acid production. They are available in prescription strength and over-the-counter strength. These drugs provide short-term relief and are effective for about half of those who have GERD symptoms.
• Proton pump inhibitors include omeprazole (Prilosec, Zegerid), lansoprazole (Prevacid), pantoprazole (Protonix), rabeprazole (Aciphex), and esomeprazole (Nexium), which are available by prescription. Prilosec is also available in over-the-counter strength. Proton pump inhibitors are more effective than H2 blockers and can relieve symptoms and heal the esophageal lining in almost everyone who has GERD.
• Prokinetics help strengthen the LES and make the stomach empty faster. This group includes bethanechol (Urecholine) and metoclopramide (Reglan). Metoclopramide also improves muscle action in the digestive tract. Prokinetics have frequent side effects that limit their usefulness—fatigue, sleepiness, depression, anxiety, and problems with physical movement.

Because drugs work in different ways, combinations of medications may help control symptoms. People who get heartburn after eating may take both antacids and H2 blockers. The antacids work first to neutralize the acid in the stomach, and then the H2 blockers act on acid production. By the time the antacid stops working, the H2 blocker will have stopped acid production.

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