
Ulcers are sores on the lining of the stomach or duodenum (the first part of the small intestine) caused by an infection from the H. pylori bacteria or overuse of non-steroidal anti-inflammatory drugs (NSAIDs). Ulcers can cause a range of symptoms, including abdominal pain, indigestion, nausea, and vomiting. While ulcers typically affect the abdomen, they can occasionally cause pain in other parts of the body, including the muscles. This may be due to the spread of infection or inflammation to nearby tissues or the central nervous system. Therefore, while not a direct consequence of ulcers, muscle pain may be associated with the condition in some cases.
| Characteristics | Values |
|---|---|
| Ulcer Location | Stomach (gastric ulcer) or duodenum (duodenal ulcer) |
| Ulcer Definition | Open sore on the lining of the stomach or duodenum |
| Ulcer Symptoms | Pain or discomfort in the abdomen, between the belly button and breastbone; pain that wakes you up at night; indigestion; nausea; vomiting; loss of appetite; weight loss; dizziness; weakness; faintness |
| Ulcer Causes | H. pylori bacterial infection; overuse of non-steroidal anti-inflammatory drugs (NSAIDs); lifestyle factors like stress and diet; certain diseases and health conditions, such as cancer or Crohn's disease; injury, blockage, or lack of blood flow to the stomach or duodenum |
| Ulcer Complications | Bleeding; perforation (hole) in the stomach or duodenal wall; infection in the abdominal cavity; sepsis |
| Ulcer Treatment | Combination of lifestyle changes and medicines; antibiotics for H. pylori infection; surgery in rare cases |
| Ulcer Diagnosis | Patient history; endoscopy; upper GI (gastrointestinal) series or barium swallow; blood tests |
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What You'll Learn

Ulcers are sores on the stomach or duodenal lining
The most common symptom of an ulcer is a dull or burning pain in the belly between the breastbone and the belly button. This pain often occurs between meals or may wake you up at night. It can last from a few minutes to a few hours. Duodenal ulcers tend to cause consistent pain, which may be relieved by eating but usually returns two to three hours later. Pain that wakes a patient at night is common for duodenal ulcers.
Ulcers can also cause other symptoms, such as indigestion, nausea and vomiting, bloating, belching, and gas pain. In some cases, ulcers do not cause any symptoms, and these are called silent ulcers. You might not experience any symptoms until you develop complications, like bleeding or a perforation (a hole in the stomach lining). Perforated ulcers are rare but considered a medical emergency. They can cause infection in the abdominal cavity, which can spread to the bloodstream and lead to sepsis.
Treatment for ulcers involves a combination of lifestyle changes and medications. In rare cases, surgery is needed. Ulcers heal when the conditions causing them are removed or treated.
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Ulcers can be caused by H. pylori bacteria
Ulcers are sores on the lining of the stomach or the first part of the small intestine (duodenum). Ulcers are caused when stomach acids and other digestive juices burn the linings of these organs.
Most ulcers are caused by an infection from a bacteria called Helicobacter pylori (H. pylori). H. pylori is a common bacterial infection that affects up to half of the world's population. It primarily lives in the stomach, and in most people, it doesn't cause any problems. However, sometimes the bacteria multiply and eat into the stomach lining, causing chronic inflammation that leads to gastric ulcers. H. pylori can spread through contact with an infected person's bodily fluids, including vomit, stool, or saliva, as well as through tainted food and water.
H. pylori causes an inflammatory response within the mucosal layer of the stomach, leading to epithelial cell degeneration and injury. This results in the disturbance of the normal defense and repair processes of the mucosal linings, making them more vulnerable to attack from stomach acid. One theory suggests that H. pylori causes the creation of ammonia to survive in the stomach's acid, which then erodes the mucous barrier that protects the cells of the digestive tract.
H. pylori infections can lead to sores called peptic ulcers in the lining of the stomach or small intestine. These ulcers are painful and can cause a dull or burning pain in the belly between the breastbone and belly button. They can also cause stomach pain, bloating, gas, and other symptoms. In rare cases, H. pylori infections can lead to stomach cancer.
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Non-steroidal anti-inflammatory drugs (NSAIDs) can cause ulcers
Ulcers are sores on the lining of the stomach or the first part of the small intestine (duodenum). They are caused by an infection from a bacteria called H. pylori (Helicobacter pylori) or from long-term use of pain medicines called non-steroidal anti-inflammatory drugs (NSAIDs). NSAIDs are over-the-counter pain and fever medicines such as aspirin, ibuprofen, and naproxen.
NSAIDs can cause ulcers because they are weak acids that cause a number of changes within the stomach, including reduced blood flow to the stomach, less mucus production, and less cell repair and reproduction. These changes break down the defence and repair processes that keep the mucosa healthy, making the mucosal linings more vulnerable to attack from stomach acid. NSAIDs exert their therapeutic anti-inflammatory and analgesic effects by inhibiting COX-2, which leads to a reduction of prostaglandin secretion and its cytoprotective effects in gastric mucosa. This increases the susceptibility to mucosal injury.
The risk of developing an ulcer from NSAID use is higher in patients with certain risk factors, such as increased age (over 65 years), a past history of peptic ulcer disease, heart disease, and co-prescription of antiplatelets, corticosteroids, and anticoagulants. The risk is also higher for patients who take higher doses of NSAIDs. In patients who are chronic users of NSAIDs and have no risk factors, only 0.4% have serious adverse events, while the risk is as high as 9% in patients with multiple risk factors. It is important to note that all NSAIDs cause some degree of gastrointestinal toxicity, and prolonged NSAID use is associated with an increased risk of gastrointestinal toxicity.
To reduce the risk of developing an ulcer from NSAID use, it is recommended to take NSAIDs with food, preferably a full meal. Additionally, NSAIDs should be used for the shortest time possible and at the lowest effective dose to avoid potential cardiovascular complications. If you experience harmful side effects like stomach pain or heartburn, you should consult your healthcare provider, who can recommend alternative treatments.
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Ulcers can cause abdominal pain
Ulcers are sores or open wounds on the lining of the stomach or the duodenum, which is the first part of the small intestine. They are caused by an infection from the H. pylori bacteria or long-term use of non-steroidal anti-inflammatory drugs (NSAIDs). NSAIDs include common over-the-counter pain relievers like ibuprofen, aspirin, and naproxen.
The pain caused by ulcers can be severe and sudden, and it may not go away. If an ulcer erodes through the stomach wall, it can cause a hole in the stomach or duodenum, leading to intense, ongoing pain that may be felt in locations other than the abdomen. The pain may change with shifts in body position. A hole in the peritoneal cavity, which surrounds the abdominal organs, can cause sudden, intense pain that spreads quickly throughout the abdomen and is worse with movement.
In some cases, ulcers do not cause any noticeable symptoms. These are called silent ulcers. People with ulcers may not experience any symptoms until they develop complications, such as bleeding or a perforation (a hole in the stomach wall).
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Ulcers can cause internal bleeding
An ulcer is a sore on the lining of the stomach or the duodenum, which is the first part of the small intestine. Ulcers are caused by an infection from the bacteria H. pylori or long-term use of non-steroidal anti-inflammatory drugs (NSAIDs). NSAIDs include common over-the-counter pain relievers like ibuprofen, naproxen, and aspirin.
The most common symptom of an ulcer is a dull or burning pain in the belly between the breastbone and the belly button. However, not all ulcers cause noticeable symptoms. Ulcers can also cause internal bleeding, which can be life-threatening. Bleeding ulcers can lead to rapid blood loss and even death. Minor bleeding in an ulcer may go unnoticed but still requires treatment. A slow-bleeding ulcer can cause anemia, making a person feel tired or short of breath.
The risk of internal bleeding from an ulcer is increased by the use of NSAIDs, which decrease the blood's clotting ability. NSAIDs also cause a number of changes within the stomach, including reduced blood flow to the stomach, less mucus production, and less cell repair and reproduction. These changes break down the defense and repair processes that keep the mucosa healthy, making it more vulnerable to attack from stomach acid.
If left untreated, peptic ulcers can cause severe internal bleeding (hemorrhaging) and perforation (a hole in the stomach lining). Perforation is a rare and severe complication that can lead to infection as stomach bacteria enter the abdominal cavity.
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Frequently asked questions
An ulcer is a sore on the lining of the stomach or the first part of the small intestine (duodenum). Ulcers range from quite small to an inch or more in size.
Abdominal pain is the most common symptom of an ulcer. The pain may be dull or burning and may come and go. It may be felt in locations other than the abdomen and may change with shifts in body position. However, it is not clear if ulcers cause muscle pain specifically.
The two most common causes of ulcers are the H. pylori bacterial infection and overuse of non-steroidal anti-inflammatory drugs (NSAIDs). NSAIDs include common over-the-counter pain relievers like ibuprofen, aspirin and naproxen.
Ulcers may be treated with a combination of lifestyle changes and medicines. In rare cases, surgery is required.











































