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Overview
What Is Gastritis?
Gastritis is inflammation or irritation of the protective lining inside the stomach. It can affect people of any age and may be linked to infection, medicines, alcohol use, immune conditions, or other health problems. Acute gastritis starts suddenly and often lasts a short time, while chronic gastritis develops gradually or continues over a longer period. This gastritis definition helps explain why symptoms and treatment can vary from person to person.
Symptoms
Gastritis Symptoms
Gastritis symptoms vary depending on the cause and how much the stomach lining is irritated. Some people have mild symptoms, while others have significant discomfort; some people have no noticeable symptoms at all.
- Upper abdominal pain or discomfort.
- Nausea.
- Vomiting.
- Feeling full soon after starting a meal (early satiety).
- Loss of appetite.
- Belching or bloating.
- Black or tarry stools (melena), which may indicate bleeding.
Seek medical care
Possible stomach bleeding
Vomiting blood or passing black, tarry stools can indicate gastrointestinal bleeding. Seek prompt medical attention, especially if these symptoms occur with dizziness, fainting, or weakness.
Causes
What Causes Gastritis?
Gastritis develops when the stomach’s protective barrier is weakened or injured, allowing inflammation to occur. The trigger may be an infection, medicine, alcohol, another illness, or an immune response.
- Helicobacter pylori (H. pylori) infection can damage the stomach lining and cause ongoing inflammation.
- Frequent or long-term use of nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen or naproxen, can irritate the stomach.
- Heavy alcohol use can directly irritate the stomach lining and contribute to alcoholic gastritis.
- Severe physical stress or serious illness can trigger acute inflammation, especially during hospitalization.
- Bile reflux can allow digestive fluid to flow back into the stomach and irritate its lining.
- Autoimmune gastritis occurs when the immune system attacks cells in the stomach lining.
- Less common conditions, including some infections, medical treatments, or prior stomach surgery, can also contribute.
Risk Factors
Gastritis Risk Factors
CHANGEABLE FACTORS
NSAID use, heavy alcohol use, smoking, and untreated H. pylori infection can increase the risk of stomach lining damage. A clinician can help review medicines and arrange appropriate infection treatment.
MEDICAL FACTORS
Older age, autoimmune disease, serious or chronic illness, and previous stomach surgery may increase susceptibility. These factors cannot always be changed, but related conditions can often be monitored or treated.
Having a risk factor does not guarantee that someone will develop gastritis. Do not stop or change prescribed medicines on your own; discuss long-term pain medicines, alcohol use, or possible side effects with a clinician.
Complications
Gastritis Complications
Many cases improve when the underlying cause is treated. However, persistent inflammation or bleeding can damage the stomach and lead to complications.
- Stomach or gastrointestinal bleeding can occur when inflammation damages blood vessels or causes an ulcer.
- Peptic ulcers may develop when the stomach lining remains damaged.
- Iron-deficiency anemia can result from ongoing small amounts of gastrointestinal bleeding.
- Vitamin B12 deficiency and related anemia may occur with some forms of chronic or autoimmune gastritis.
- Certain chronic causes may increase the need for long-term medical monitoring because of changes in the stomach lining.
When it can be serious
Severe symptoms need urgent care
Uncomplicated gastritis is usually treatable and is not typically life-threatening. Severe bleeding or an untreated underlying disease can be dangerous, so vomiting blood, black stools, fainting, or marked weakness requires urgent medical care.
Diagnosis
How Gastritis Is Diagnosed
Diagnosis begins with your symptoms, medical history, medication review, alcohol use, and a physical examination. Because indigestion and upper abdominal discomfort can have other causes, a clinician may recommend tests based on the pattern and duration of symptoms.
- H. pylori testing may use a breath test, stool test, or another method to look for the infection.
- Blood tests can check for anemia, inflammation, or vitamin deficiencies when clinically appropriate.
- Stool tests may look for hidden blood or help assess other digestive problems.
- Upper endoscopy allows a clinician to examine the stomach lining and take a biopsy when symptoms, bleeding, age, or risk factors warrant it.
Treatment & Management
Gastritis Treatment and Management
Gastritis treatment depends on the underlying cause, so there is no single permanent cure for every type. A clinician may treat an infection, reduce acid, review irritating medicines, address nutritional deficiencies, or recommend changes that allow the stomach lining to heal.
| Cause or goal | Typical management |
|---|---|
| H. pylori infection | Clinician-prescribed combination treatment and confirmation of eradication when appropriate. |
| Medication-related irritation | Review the medicine with a clinician and use stomach-protective treatment when advised. |
| Acid-related symptoms | Use an appropriate acid-reducing medicine under medical guidance. |
| Lifestyle-related irritation | Avoid alcohol and personal triggers while the stomach lining heals. |
Prevention
Can Gastritis Be Prevented?
- Take NSAIDs only as directed and use the lowest effective amount for the shortest appropriate time.
- Discuss long-term pain medicines with a clinician, especially if you have a history of gastritis or ulcers.
- Limit alcohol to reduce irritation of the stomach lining.
- Avoid tobacco because smoking can interfere with stomach protection and healing.
- Complete prescribed H. pylori treatment and attend follow-up testing when recommended.
There is no routine screening program for gastritis. Prevention focuses on reducing known risks and treating underlying conditions, although not every cause can be avoided.
Outlook and Prognosis
Gastritis Outlook and Prognosis
Acute gastritis often improves after its trigger is removed and treated. Chronic gastritis may recur or require long-term monitoring, particularly when it is related to H. pylori infection, autoimmune disease, or another continuing condition.
Persistent symptoms, recurrent bleeding, anemia, or unexplained weight loss warrant follow-up even if the initial discomfort improves. These symptoms may signal ongoing inflammation or another condition that needs evaluation.
When Should You See a Doctor
When Should You See a Doctor for Gastritis?
- Arrange a medical appointment for persistent or recurring upper abdominal pain.
- Arrange an evaluation for frequent nausea or vomiting.
- Contact a clinician if symptoms begin or worsen after starting an NSAID.
- Seek medical advice for unexplained weight loss.
- Arrange an appointment for symptoms of anemia, such as unusual tiredness, shortness of breath, or dizziness.
Get urgent help
Warning signs
Seek urgent or emergency care for vomiting blood, black or tarry stools, fainting, severe weakness, severe persistent abdominal pain, or an inability to keep fluids down.
Branches
1 topic
Gastritis
Gastroenterology
Symptoms
6 topics
Gastritis
Abdominal Pain
Gastritis
Bloating
Gastritis
Indigestion
Gastritis
Loss Of Appetite
Gastritis
Nausea
Gastritis
Vomiting
