

Dr Kieron Lim
Senior Consultant Gastroenterologist & Hepatologist
MBBS, University of London, Member, Royal College of Physicians (UK), Fellow, Academy of Medicine (Gastroenterology) Singapore, Fellow, Royal College of Physicians (Edinburgh)
Gastritis may require specialist assessment if its symptoms persist, return regularly, do not improve with initial treatment or begin interfering with your daily life. This condition may also require immediate medical assessment if you experience warning signs such as vomiting blood, black stools or unexplained weight loss.
As these symptoms can have causes other than gastritis, further evaluation may be needed to identify the underlying problem and determine the appropriate treatment. Understanding these causes and criteria can help you feel more confident about seeking care in a timely manner.
Gastritis is inflammation of the stomach lining. The stomach lining is protected by a layer of mucus that helps shield it from stomach acid and digestive enzymes. Gastritis develops when the lining becomes inflamed or damaged. However, when this protective barrier weakens, digestive fluids can damage or inflame it, leading to gastritis. This condition can interfere with digestion and lead to various symptoms.
Some people have no noticeable symptoms, while others may experience upper abdominal pain, indigestion, nausea, bloating, vomiting or reduced appetite. Possible causes include an H. pylori infection, regular use of anti-inflammatory painkillers, excessive alcohol consumption and certain immune-system conditions. Because these symptoms can also occur with other digestive problems, gastritis cannot always be confirmed from symptoms alone.
Gastritis may require specialist care when it begins to interfere with eating, sleep, work or other normal activities.
This may include:
Specialist assessment may be appropriate if these difficulties continue, become more frequent or prevent you from eating and functioning normally. Unexplained weight loss, repeated vomiting or difficulty swallowing should be assessed promptly rather than treated as routine gastritis symptoms.
Persistent or recurring symptoms associated with gastritis require further assessment because the underlying cause may not have been identified or adequately treated. Although symptoms may settle temporarily and return weeks or months later, this does not necessarily mean that the problem has fully resolved between episodes. They should not be dismissed as routine symptoms, especially if they become more frequent or last longer each time.
Depending on the type and duration of gastritis, continued inflammation may contribute to ulcers, stomach bleeding, anaemia or difficulty absorbing certain nutrients. Further assessment can establish whether inflammation remains present and whether another digestive condition is causing similar symptoms.
A gastroenterologist may recommend gastroscopy, an H. pylori breath test or an upper gastrointestinal series to investigate ongoing symptoms. Each test provides different information about the stomach and possible causes of the symptoms.
Before each test, your doctor will first review your medical history, symptoms and medication before performing a physical examination and deciding which tests are appropriate.
A gastroscopy allows the gastroenterologist to examine the oesophagus, stomach and first part of the small intestine using a thin, flexible camera passed through the mouth. It can reveal inflammation or other changes in the digestive tract. Small tissue samples may also be collected for further examination.
An H. pylori breath test checks whether the bacteria are present in the stomach. You will swallow a capsule or liquid containing specially labelled urea. If H. pylori is present, the bacteria break down the urea and produce labelled carbon dioxide that can be detected in your breath.
An upper gastrointestinal series uses X-rays to examine the oesophagus, stomach and first part of the small intestine. You will drink a liquid containing barium, which coats the digestive tract and makes its outline visible on the X-ray images. This can help the doctor identify possible abnormalities.
Assessment results guide gastritis treatment by identifying the likely cause, showing whether the stomach lining has been damaged and ruling out other digestive conditions. This allows treatment to address the underlying problem rather than only providing temporary symptom relief.
If an H. pylori infection is detected, treatment may include antibiotics and medicine that reduces stomach acid. If a prescription medication appears to be irritating the stomach lining, the doctor may review whether it can be changed or adjusted.
Gastroscopy may also reveal inflammation, bleeding, an ulcer or another abnormality requiring a different treatment approach. If the results suggest that another condition is causing the symptoms, your gastroenterologist can recommend further evaluation or treatment accordingly.

Persistent or recurring gastritis symptoms should not be dismissed, particularly when they interfere with your daily quality of life. A specialist assessment can help establish whether gastritis is present, identify its underlying cause and determine whether treatment or further monitoring is needed.
At Kieron Lim Gastroenterology, Senior Consultant Gastroenterologist & Hepatologist Dr Kieron Lim assesses each patient’s symptoms, medical history, medication use and test results before recommending an appropriate treatment plan. His approach considers each patient’s individual needs and circumstances, with treatment reviewed and adjusted according to their progress.
If you have ongoing or recurring stomach symptoms, or would like to review your current gastritis treatment, contact us to arrange a consultation with Dr Lim.

Meet Our Doctor
Dr Kieron Lim
Senior Consultant Gastroenterologist & Hepatologist
MBBS, University of London Member, Royal College of Physicians (UK) Fellow, Academy of Medicine (Gastroenterology) Singapore Fellow, Royal College of Physicians (Edinburgh)
Dr Kieron Lim is a senior consultant specialising in Gastroenterology and Hepatology, providing comprehensive care for patients with gastrointestinal conditions in Singapore. His expertise extends to disorders affecting the oesophagus, stomach, colon, liver, pancreas and gallbladder. Through his experience, Dr Lim enhances patient outcomes by facilitating early detection and timely medical interventions.