Gastritis

Gastritis is a common digestive condition that affects millions of people worldwide. It occurs when the lining of the stomach becomes inflamed or irritated, leading to various uncomfortable symptoms. While gastritis can be acute or chronic, it is essential to understand the causes, symptoms, and available treatment options to manage the condition effectively. In this article, we will explore the causes, symptoms, stages, and treatment options for gastritis to help you better understand this condition.

What is Gastritis?

Gastritis is the condition when the soft, protective lining inside your stomach becomes swollen or irritated. This lining normally acts like a shield, protecting your stomach from strong acids that help digest food. When the lining is inflamed, it means something is damaging it – this could be an infection (like bacteria), a substance you’ve consumed (such as alcohol or spicy foods), or even your stomach’s own digestive juices. Once this protective barrier is weakened, it leads to discomfort and other problems in your stomach.

Gastritis can be classified into several types based on its causes and effects on the stomach lining. The main types include:

• Acute gastritis: This type involves a sudden onset of stomach lining inflammation, often caused by irritants like NSAIDs, alcohol, or early-stage H. pylori infection. Symptoms may include acute stomach upset, upper abdominal pain, nausea, vomiting, and bloating.
• Chronic gastritis: Characterised by persistent, low-grade inflammation and damage to the stomach lining, chronic gastritis can result from long-term H. pylori infection, autoimmune diseases, and prolonged NSAID use. It can lead to stomach lining thinning and increased gastric cancer risk.
• Erosive gastritis: A type in which the stomach lining becomes inflamed and eroded, often related to alcohol use, stress, or long-term NSAID use.
• Nonerosive gastritis: In this less common type, the stomach lining becomes inflamed without eroding, potentially caused by infections, autoimmune diseases, and other factors.
• Autoimmune gastritis: Occurring when the immune system attacks healthy stomach lining cells, this type causes chronic inflammation and possible vitamin deficiencies, including vitamin B12 deficiency anaemia.
• Infectious gastritis: Gastritis caused by infections such as H. pylori, which can be acute or chronic and is a major contributor to peptic ulcers and gastric cancer risk.

While gastritis types vary, they all involve some degree of stomach lining inflammation that can progress to more severe complications if left untreated. Recognising the symptoms early allows for prompt diagnosis and appropriate treatment.

Some early signs that may indicate the development of gastritis include:

• Mild, recurring abdominal pain or discomfort
• Occasional indigestion or heartburn
• Feeling of fullness or bloating after eating small amounts of food
• Gradual loss of appetite
• Nausea, especially in the morning or after meals
• Excessive belching or gas
• Bad breath or a metallic taste in the mouth
• Hiccups that persist for more than a day
• Mild, unexplained weight loss over time
• Subtle non-specific changes in bowel habits, such as occasional constipation or diarrhoea, although these are not typical features of gastritis

If you experience any of these early signs persistently, it's essential to consult your doctor for a proper evaluation.

Sometimes, gastritis causes no symptoms at all. But if symptoms do show up, it usually means the problem has become more serious or has been there for a long time. The lining may have worn down so much that your stomach’s own acids and enzymes start hurting it. The inflammation can cause indigestion, and underlying causes such as H. pylori or NSAID use may also lead to ulcers, which can bleed.

Some of the common symptoms of gastritis include:

• Abdominal pain: Gastritis often causes a dull or burning pain in the upper abdomen, typically in the centre or upper left part of the stomach. The pain may worsen when the stomach is empty or after eating certain foods, such as spicy or fatty meals.
• Nausea and vomiting: Inflammation of the stomach lining can lead to feelings of nausea and the urge to vomit. In some cases, vomiting may occur, especially if the gastritis is caused by an infection or excessive alcohol consumption.
• Indigestion: Gastritis can cause indigestion, characterised by a feeling of fullness, belching, and discomfort in the upper abdomen.
• Bloating: Bloating may also occur, causing the stomach to feel tight and swollen.
• Loss of appetite: The inflammation and discomfort associated with gastritis can lead to a decreased appetite. Some people may feel full quickly after eating only a small amount of food.
• Unexplained weight loss: Chronic gastritis can sometimes result in unintentional weight loss due to reduced food intake and nutrient absorption issues.
• Gastrointestinal bleeding: In severe cases of erosive gastritis, bleeding may occur in the stomach lining. This can lead to symptoms such as black, tarry stools (melena) or vomiting blood (haematemesis), which require immediate medical attention.
• Stomach Pain: You may feel a burning, gnawing, or aching pain in your upper stomach. This discomfort may be worse on an empty stomach or at night.
• Nausea and Vomiting: You might feel like throwing up or vomit, especially after eating certain foods.
• Black Blood: If gastritis causes a bleeding ulcer, you may notice black or tar-like stools (called melena) or dark blood in your vomit that looks like coffee grounds.

Recognising these symptoms can help in the early diagnosis and treatment of gastritis, preventing potential complications.

Gastritis happens when your stomach’s protective lining becomes weak or damaged, allowing acids to damage the stomach wall. There are several reasons why this can happen:

• Infection with Helicobacter pylori (H. pylori): This common bacterium infects many people worldwide. While not everyone develops symptoms, it can cause chronic gastritis, ulcers, and other stomach issues. Risk increases with factors such as crowded living conditions, poor sanitation, and smoking.
• Use of non-steroidal anti-inflammatory drugs (NSAIDs): Long-term use of NSAIDs, such as aspirin, ibuprofen, and naproxen, can irritate the stomach lining and cause gastritis.
• Alcohol consumption: Drinking too much alcohol can wear down the lining of the stomach and lead to gastritis.
• Autoimmune disorders: In some cases, the immune system may attack the cells of the stomach lining, resulting in autoimmune gastritis and inflammation.
• Stress and severe illness: Severe stress, such as that caused by injury, surgery, or serious illness, can contribute to the development of gastritis.
• Other causes: Less common causes of gastritis include bile reflux (backflow of bile into the stomach), consuming caustic substances, viral infections like cytomegalovirus and herpes simplex virus, and certain inflammatory conditions like Crohn's disease and coeliac disease.

Understanding the causes of gastritis is crucial for preventing and managing the condition.

Several factors can increase an individual's likelihood of developing gastritis:

• Age: As people get older, the stomach lining tends to become thinner, making them more susceptible to gastritis.
• Medication use: Regular use of NSAIDs can irritate the stomach lining and increase the risk of developing gastritis.
• Immune system issues: Individuals with weakened immune systems, such as those with HIV/AIDS, are more likely to contract infections that can cause gastritis.
• Lifestyle factors: Heavy alcohol consumption and smoking increase the risk of developing gastritis.
• Previous gastric conditions: People with previous gastric conditions or a history of gastric surgery are at higher risk.

Identifying and addressing these risk factors can help you take steps to prevent gastritis or manage the condition more effectively.

If left untreated, gastritis can lead to various complications, including:

• Peptic ulcers: Gastritis can lead to the formation of peptic ulcers, which are painful sores in the stomach lining that can cause bleeding and scarring.
• Gastrointestinal bleeding: Chronic gastritis can cause erosion of the stomach lining, leading to bleeding. This may result in anaemia and, in severe cases, may require blood transfusions or surgery.
• Anaemia: Chronic gastritis can lead to bleeding in the stomach, which may result in anaemia, a condition characterised by a lack of healthy red blood cells.
• Stomach cancer: In rare cases, chronic gastritis, particularly when caused by H. pylori infection, can increase the risk of developing stomach cancer.

Seeking prompt diagnosis and treatment for gastritis can help prevent these complications from developing.

While not all cases of gastritis can be prevented, there are several steps individuals can take to reduce their risk:

• Avoid or limit NSAIDs: If possible, avoid using NSAIDs or limit their use. If you need to take them, do so with food and follow your doctor's instructions.
• Manage stress: Practice stress-reduction techniques like meditation, deep breathing, or yoga to help manage stress levels.
• Maintain a healthy diet: Eat a balanced diet rich in fruits, vegetables, and whole grains. Avoid spicy, fatty, or acidic foods that may irritate the stomach lining.
• Limit alcohol consumption: Reduce or avoid alcohol consumption to prevent damage to the stomach lining.
• Quit smoking: Smoking can irritate the stomach lining and increase the risk of gastritis.
• Practice good hygiene: Wash your hands regularly and consume clean water and food to reduce the risk of bacterial infections that can cause gastritis.

By adopting these preventive measures and seeking prompt treatment when necessary, individuals can reduce their risk of developing gastritis and its associated complications.

Diagnosing gastritis involves a combination of assessing symptoms, clinical presentation, and various diagnostic tests. These include:

• Physical examination: During the physical examination, the doctor may palpate the abdomen to detect tenderness or discomfort. This can provide clues about the presence and extent of inflammation in the stomach lining.
• Endoscopy: A flexible tube with a camera is inserted through the mouth to visually inspect the stomach lining. Biopsies can be taken during the procedure to check for inflammation, ulcers, or infection, according to the ACG Guidelines (2022).
• Upper gastrointestinal series: This involves swallowing a barium solution to visualise the stomach and small intestine using X-rays, helping to identify ulcers, inflammation, or other abnormalities.
• Blood tests: These can check for signs of infection, such as H. pylori (a common cause of gastritis), and identify anaemia resulting from chronic bleeding.
• Stool tests: These detect the presence of blood in the stool, which may indicate stomach bleeding.
• Breath tests: The urea breath test can also detect H. pylori by measuring the amount of carbon dioxide produced when the bacteria break down urea.

Treatment for gastritis depends on its causes. If it’s due to alcohol or certain pain medicines (like NSAIDs), stopping those might help it heal on its own.

1. Antibiotics for H. pylori

If you have this bacteria, your doctor will give you a combination of antibiotics such as amoxicillin, clarithromycin, metronidazole, tinidazole, or tetracycline for 7 to 14 days. You must complete the full course, even if you feel better early. Your doctor will also give you medicines to reduce stomach acid. After treatment, they may test again to make sure the bacteria are gone, according to the ACG Guidelines (2022).

2. Proton Pump Inhibitors (PPIs)

These medicines reduce acid in your stomach and help it heal. Examples include omeprazole, esomeprazole, pantoprazole, rabeprazole, lansoprazole, and dexrabeprazole. You may get a prescription or buy them over-the-counter. Long-term high-dose PPI use has been associated with an increased risk of bone fractures, so doctors generally prescribe the lowest effective dose for the shortest duration needed.

3. Acid Blockers (Histamine-2 Antihistamines)

These also reduce the amount of acid your stomach makes, relieving pain and helping your stomach lining heal. Common options include famotidine and cimetidine. (Ranitidine has been withdrawn from many markets due to safety concerns.) They are available by prescription or over-the-counter.

4. Antacids (Neutralisation of Gastric Acid)

These neutralise the acid that’s already in your stomach and can give quick relief from pain. Examples include sodium bicarbonate, magnesium hydroxide, aluminium hydroxide, and magaldrate. However, they are not as strong as PPIs or acid blockers and may cause constipation or diarrhoea depending on what they contain.

5. Combination Therapy

In some cases, a combination of the above treatments is used for optimal results, especially in cases involving H. pylori. For instance, antibiotics are paired with PPIs and sometimes bismuth to effectively eradicate the infection and reduce acid.

If you experience persistent or severe symptoms of gastritis, it’s crucial to see a doctor promptly. Seek medical attention immediately if you have severe abdominal pain that does not improve with over-the-counter medications, notice black, tarry stools, experience shortness of breath, dizziness, or fainting, or are losing weight unintentionally. These symptoms may indicate more serious complications, such as bleeding or ulcers, which require urgent evaluation and treatment. Early intervention is essential to prevent the condition from worsening and to minimise the risk of long-term complications.

• Gastritis is an inflammation of the stomach lining caused by various factors, including Helicobacter pylori infection, NSAID use, and excessive alcohol consumption.

• Common symptoms include abdominal pain, nausea, vomiting, and bleeding.

• Diagnosis involves assessing symptoms, clinical history, and diagnostic tests like endoscopy, upper GI series, blood tests, stool tests, and breath tests.

• Treatment typically involves medications (antacids, acid reducers, H2 blockers, PPIs, antibiotics) and lifestyle changes (dietary modifications, reducing NSAID use, stress management, quitting smoking).

• Prompt medical attention should be sought for severe or persistent gastritis symptoms to prevent complications and ensure appropriate treatment.