What causes indigestion? 21 possible conditions

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What Is Indigestion?

Indigestion (dyspepsia) happens to almost everyone from time to time. It may cause stomach discomfort or a feeling of being too full. When severe, it can cause heartburn, bloating, nausea, and vomiting.

Indigestion may be the result of your eating habits, or it can be a chronic problem. If you suffer from frequent indigestion, talk to your doctor.

Common Complaints

Common symptoms of indigestion include:

  • feeling full during a meal and not being able to finish eating
  • feeling extremely full after eating a normal-sized meal
  • a burning sensation in the stomach or esophagus
  • a gnawing sensation in the stomach
  • heartburn
  • bloating
  • gas
  • nausea
  • vomiting

Causes of Indigestion

Unhealthy eating habits can contribute to poor digestion. Common causes include:

  • overeating
  • eating too quickly
  • eating spicy or fatty foods
  • lying down too soon after eating

Other factors that can cause poor digestion include:

  • smoking
  • drinking too much alcohol
  • side effects of medicines (especially non-steroidal/anti-inflammatory drugs, such as aspirin and ibuprofen)

Indigestion can also be the result of serious problems in your upper digestive tract. Common digestive diseases that can cause indigestion include:

  • acid reflux disease (also called GERD)
  • gastric cancer
  • pancreas or bile duct abnormalities
  • peptic ulcers (sores in the lining of the stomach and esophagus caused by the H. pylori bacterium)

According to the National Digestive Diseases Information Clearinghouse, digestive diseases affect 60 to 70 million Americans each year (NDDIC). GERD was reported by about 20 percent of the population in 2004, while peptic ulcer disease affected 14.5 million people in 2007.

Sometimes, it is impossible to determine the cause of indigestion. This is called functional dyspepsia. Functional dyspepsia may be caused by abnormal muscle motility (squeezing action) in the area where the stomach muscles help digest food and move it into the small intestine (NDDIC).

Diagnosing Indigestion

Your doctor will start by asking questions about your medical history and eating habits. He or she will also perform a physical examination and order X-ray images of your abdomen to see if there are any abnormalities in your digestive tract. Further tests on samples of your blood, breath, and stool can be used to check for the type of bacteria that causes peptic ulcers.

An endoscopy of the upper digestive tract can also be used to check for abnormalities. An endoscopy requires that the doctor gently pass a small tube with a camera and biopsy tool through the esophagus and into the stomach. This allows the doctor to view the lining of the digestive tract to check for disease and to collect biopsies (tissue samples) to be tested for infection or cancer. This procedure is done while the patient is mildly sedated. An upper GI endoscopy can be used to diagnose GERD, ulcers, infection, and cancer.

When to See the Doctor

See your doctor right away if you:

  • have severe vomiting
  • vomit blood
  • have recently lost a lot of weight
  • have black stools
  • have trouble swallowing

Treatment for Indigestion

Medications are commonly used to treat indigestion, but they all have side effects. Over-the-counter antacids, such as Maalox and Mylanta, can neutralize stomach acid, but can also cause diarrhea or constipation.

H2 receptor antagonists (H2RAs), such as Zantac and Pepcid, work to reduce stomach acid. However, they can also cause:

  • nausea
  • vomiting
  • diarrhea
  • constipation
  • headache
  • bleeding or bruising

Prokinetics, such as the prescription medications Reglan and Motilium, improve the muscle action (motility) of the digestive tract, but can also cause:

  • depression
  • anxiety
  • spasms or involuntary movements
  • fatigue

Proton pump inhibitors (PPIs), such as Prilosec, also reduce stomach acid, but are typically stronger than H2RAs. They can also cause:

  • nausea and vomiting
  • constipation
  • diarrhea
  • cough
  • headache
  • backache
  • dizziness
  • abdominal pain

Both PPIs and H2 drugs are typically used to treat peptic ulcers. If the bacterium H. pylori are the cause of the ulcers, these drugs are used in combination with antibiotics, such as clarithromycin and amoxicillin.

Lifestyle Tips

You may be able to get relief from indigestion without medication. Here are some simple lifestyle changes that can help:

  • Eat smaller meals throughout the day.
  • Avoid spicy, fatty foods that can trigger heartburn.
  • Eat more slowly and don’t eat before lying down.
  • Stop smoking.
  • Lose excess body weight.
  • Reduce the amount of coffee, soft drinks, and alcohol you consume.
  • Get plenty of rest.
  • Stop taking medicines that irritate the stomach lining, such as NSAIDs and aspirin.
  • Reduce stress through yoga or relaxation therapy.

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See a list of possible causes in order from the most common to the least.

1

Gastritis

Gastritis is acute or chronic inflammation of the protective lining of the stomach. It's often caused by the bacterium H. pylori, but can also be the result of excessive NSAID, alcohol, or cocaine consumption.

Read more »

2

Gallstones

Gallstones are hard deposits in the gallbladder that can eventually block the exiting bile ducts. Abdominal pain, fever, itchy skin, and jaundice are possible symptoms.

Read more »

3

Stomach Ulcer

Stomach ulcers are painful sores in the stomach lining or small intestine. They occur when the mucus that protects the stomach from digestive juices is reduced. They are curable but can become severe if not treated.

Read more »

4

Peptic Ulcer

Peptic ulcers are sores that develop in the lining of the stomach, esophagus, or rarely in small intestine. They are usually caused by H. pylori, excessive NSAID or alcohol usage, smoking, or stomach cancer.

Read more »

5

Gall Bladder Inflammation

Gallbladder disease is a term for several types of conditions that can affect your gallbladder, a small pear shaped sac located under the liver. The majority of gallbladder diseases are caused by inflammation due t...

Read more »

6

Cirrhosis

Cirrhosis is severe scarring and poor function of the liver caused by long-term exposure to toxins such as alcohol or viral infections. Certain medications and disorder can also cause cirrhosis.

Read more »

7

Acute Pancreatitis

Acute pancreatitis is an inflammation in the pancreas, which causes pain and swelling in the upper left side of the abdomen, nausea, and burping.

Read more »

8

Generalized Anxiety Disorder

People who suffer from generalized anxiety disorder, or GAD, worry uncontrollably about common occurrences and situations. The condition may also be called chronic anxiety neurosis.GAD is different than normal feeling...

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9

Pregnancy

Bleeding or spotting, increased need to urinate, tender breasts, fatigue, nausea, and missed period are signs of pregnancy.

Read more »

10

Ovarian Cysts

Most women will develop at least one cyst on their ovaries during their lives. In most cases, these cysts are painless and cause no symptoms.

Read more »

11

Congestive Heart Failure (CHF)

Congestive heart failure (CHF) is a chronic condition that affects the chambers of your heart. You have four heart chambers: two atria in the upper half of the heart and two ventricles in the lower half. Th...

Read more »

12

Celiac Disease (Gluten Intolerance)

Celiac disease is a digestive disorder. It is caused by an immune reaction to gluten. Celiac disease is also known as: sprue nontropical sprue gluten intolerance gluten-sensitive enteropathy Gluten is a protein found i...

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13

Stomach Cancer (Gastric Adenocarcinoma)

Gastric cancer, also known as gastric adenocarcinoma, is a cancer that forms inside of the stomach. It is the most common type of stomach cancer worldwide, and most commonly affects men over the age of 40.

Read more »

14

Pancreatic Cancer

Pancreatic cancer occurs within the tissues of the pancreas, a vital organ that is located behind the stomach. The pancreas plays an essential role in digestion by producing enzymes that the body needs to digest fats...

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15

Ovarian Cancer

The ovaries are small, almond-shaped organs located on either side of the uterus. They are where eggs are produced. Ovarian cancer can occur in several different parts of the ovary. Ovarian cancer can start in th...

Read more »

16

Chronic Cholecystitis

Cholecystitis (ko-luh-sis-TIE-tis) or acute cholecystitis is the inflammation of your gallbladder. If this condition persists for a prolonged period of time or if you have repeated attacks, it is called chroni...

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17

H. Pylori Infection

H. pylori are a type of bacteria that may infect around two-thirds of the people in the world. The H. in the name is short for Helicobacter-so called because they are spiral in shape ("helico-," as in the wor...

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18

Chronic Pancreatitis

Chronic pancreatitis affects the organ known as the pancreas, which is located below your stomach. The pancreas produces enzymes, which help to digest your food, and hormones such as insulin, which regulates the leve...

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19

Chronic Gastritis

Chronic gastritis involves swelling or inflammation of the stomach lining. If you have this condition, you might feel full after eating just a few bites. Chronic gastritis might be painless or cause you dull, persisten...

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20

Acute Cholecystitis - A Fancy Term for an Inflamed Gallbladder

Acute cholecystitis is also known as inflammation of the gallbladder. The gallbladder is an organ that sits below the liver, and helps your body digest fat. Cholecystitis can become very severe and requires immediat...

Read more »

This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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