In-Depth Guide
Written and clinically reviewed by the doctors of Klinik Muhibbah, Masai, Johor — Dr. Prabagaran Kanapathy (MMC 63651) and Dr. Kirubah Sai Patnaik (MMC 93850). General health information, not a diagnosis. For emergencies call 999.
Go to Hospital Now If Any of This Applies
Before anything else on this page, read this section. Most stomach pain is not dangerous. A small proportion is, and the people who die from abdominal pain in Malaysia are very often people who assumed it was gastrik and took another antacid.
Call 999 or go straight to the nearest emergency department if you have any of the following. Severe abdominal pain that came on suddenly and is unlike anything you have had before. An abdomen that has gone hard, rigid and board-like, so painful that you cannot bear to be touched or to move — that is peritonitis until proven otherwise, and it can mean a perforated ulcer. Vomiting blood, whether bright red or looking like coffee grounds. Stools that are black, sticky and tarry with a foul smell — that is digested blood, not iron tablets, and it means bleeding somewhere in your upper gut. Abdominal pain together with fever and yellowing of the eyes or skin. Severe pain in the upper abdomen boring through to the back, with persistent vomiting, which can be pancreatitis. Pain that began around the navel and has shifted to the lower right side, worse on movement or coughing, with fever or loss of appetite — the classic pattern of appendicitis. A swollen, distended abdomen with vomiting and no passage of stool or wind, which suggests obstruction.
And the one that catches people out most: abdominal or upper stomach discomfort together with chest pain, tightness, heavy sweating, breathlessness, or pain spreading to the jaw, neck or left arm. A heart attack very commonly presents as indigestion. Patients describe it as bad gastric, take an antacid, lie down, and lose hours that mattered. If you are over forty, or diabetic, or a smoker, or have high blood pressure or cholesterol, treat new upper abdominal discomfort with those features as cardiac until a doctor with an ECG tells you otherwise.
None of these are suitable for a teleconsultation. No doctor can safely assess a rigid abdomen or rule out a heart attack over video. Do not book a call. Go.
What Malaysians Actually Mean When They Say "Gastric"
In Malaysia, gastrik is not a diagnosis. It is a national shorthand for almost any discomfort between the ribs and the navel, and the fact that one word covers so much genuinely delays diagnoses in this country. Untangling it is the single most useful thing this page can do for you.
When a patient tells me they have gastric, they could be describing at least five different things. They might mean dyspepsia — a general term for upper abdominal discomfort, fullness, bloating, early satiety or burning, which is a description of symptoms rather than a cause. They might mean gastro-oesophageal reflux, where acid escapes upward into the oesophagus and produces burning behind the breastbone, an acid or bitter taste, and a cough or hoarse voice that is worse at night. They might mean gastritis, which is actual inflammation of the stomach lining — usually from Helicobacter pylori infection or from painkillers. They might mean peptic ulcer disease, a genuine break in the lining of the stomach or duodenum, which can bleed or perforate. Or they might mean functional dyspepsia, where the symptoms are entirely real but the stomach lining looks normal when you scope it.
These are not the same condition and they are not managed the same way. Reflux responds to acid suppression and to changing when and how much you eat. H. pylori gastritis and ulcers need the bacteria identified and eradicated with a specific antibiotic combination — antacids alone will not touch the underlying cause, and the ulcer will keep coming back. Painkiller-induced ulcers need the painkiller stopped. Functional dyspepsia needs a completely different conversation about gut sensitivity, meal patterns and stress, and responds poorly to escalating doses of acid medication.
So when a patient says they have had gastric for eight years and have been buying Actal or Gaviscon or omeprazole off the shelf that whole time, my first thought is not what to prescribe. It is that nobody has ever established which of these five things they actually have. That is where a proper assessment starts.
Where It Hurts Tells Us a Great Deal
The abdomen is not one organ. When a patient points to where the pain is, they have already narrowed the possibilities considerably, and one of the first things I ask is to point with one finger rather than describing it with a whole hand.
Epigastric pain — the area just below the breastbone, above the navel — is the classic gastric zone. This is where the stomach, the duodenum and the pancreas project. Burning here, related to meals or to hunger, relieved by food or antacids, points toward reflux, gastritis or peptic ulcer. Severe boring epigastric pain going through to the back with vomiting raises pancreatitis. And, as above, this same area is where cardiac pain can be felt, particularly in diabetics and the elderly, whose heart attacks are often atypical.
Right upper quadrant pain — under the right rib cage — is gallbladder and liver territory. Gallstone pain is typically a severe, gripping ache building over half an hour to an hour, often after a fatty or heavy meal, sometimes waking the patient at night, and it can radiate to the right shoulder blade. Add fever and jaundice and you have moved from simple biliary colic to cholecystitis or cholangitis, which is an emergency.
Right lower quadrant pain matters because of the appendix. The textbook pattern is vague pain around the navel that migrates over some hours to a sharp, localised pain in the lower right, with nausea, loss of appetite and low-grade fever, worsened by walking or coughing. In women, ovarian and gynaecological causes and ectopic pregnancy sit in the same region and must be excluded.
Left lower quadrant pain suggests the sigmoid colon — diverticular disease, constipation, colitis. Periumbilical pain around the navel is often small bowel: gastroenteritis, obstruction, or early appendicitis before it localises. Loin pain, in the flank going round from the back toward the groin, and coming in unbearable waves, is usually a kidney stone, particularly with blood in the urine.
Generalised pain everywhere, with a hard abdomen, is the pattern that worries a doctor most.
Reflux and GORD: Why Malaysian Eating Habits Make It Worse
Gastro-oesophageal reflux disease happens when the muscular valve at the bottom of the oesophagus, the lower oesophageal sphincter, does not hold. Stomach contents including acid travel back up into a tube that has no protective lining, and the result is burning behind the breastbone, regurgitation of sour or bitter fluid, and sometimes a chronic dry cough, throat clearing, hoarseness in the morning, or the sensation of a lump in the throat. Some people with reflux never get classic heartburn at all — they get the throat and cough symptoms and spend months being treated for allergy or sinus problems.
Our habits in Malaysia are close to a designed experiment in provoking reflux. Supper culture is the biggest single factor. Eating a full plate of nasi goreng, mee goreng or roti canai at eleven at night and lying down by midnight means a stomach still full of food and acid with gravity no longer helping. The lower oesophageal sphincter relaxes, and reflux follows almost inevitably. Shift workers in Pasir Gudang and the industrial estates around Masai have a particular version of this problem — the main meal of the day is often eaten immediately before sleeping, because that is when the shift ends.
Add to that heavy coffee and teh tarik intake, which relaxes the sphincter directly. Chilli and heavily spiced food, which irritates an already inflamed oesophagus. Fatty and fried food, which slows stomach emptying so the stomach stays loaded for longer. Smoking, which both relaxes the sphincter and reduces the saliva that would otherwise neutralise acid. Alcohol. Carbonated drinks. And central obesity, which raises pressure inside the abdomen and pushes stomach contents upward — this is one of the strongest and most reversible risk factors we have.
The useful part of this list is that most of it is modifiable, and modifying it works better than most people expect. I would rather a patient shift their last meal three hours earlier than take a proton pump inhibitor indefinitely without ever addressing why the reflux is happening. But reflux that has gone on for years, or that is not settling with treatment, needs assessment rather than more antacids — long-standing reflux is the pathway to Barrett's oesophagus, and that changes the follow-up entirely.
Helicobacter Pylori and Peptic Ulcers: Why Years of Antacids Is Not a Plan
Helicobacter pylori is a bacterium that colonises the stomach lining, usually acquired in childhood, and it is common across Southeast Asia including Malaysia. Prevalence in Malaysian studies varies substantially between ethnic groups and regions — it has consistently been reported as higher among Indian and Chinese Malaysians than among Malays, though the reasons for that difference are still debated and figures differ between studies and over time. What matters clinically is that it is common enough that in any Malaysian patient with persistent dyspepsia, it deserves to be tested for rather than assumed absent.
H. pylori causes chronic inflammation of the stomach lining. In a proportion of people that inflammation progresses to gastric or duodenal ulceration, and over decades a subset develop atrophic changes that carry an increased risk of gastric cancer. The World Health Organization classifies it as a Group 1 carcinogen. This is why finding and eradicating it is not a cosmetic exercise.
Testing is straightforward and does not require a scope. The urea breath test is the usual non-invasive option and is accurate. Stool antigen testing is an alternative. Both require you to stop proton pump inhibitors for around two weeks and antibiotics for four weeks beforehand, otherwise you get a false negative — a genuinely common problem, because most patients arrive already self-medicating with omeprazole. Blood antibody testing is much less useful, because it stays positive after successful treatment and cannot distinguish past from present infection.
Eradication is a combination of two antibiotics plus a proton pump inhibitor, usually for fourteen days, with the specific regimen chosen according to local resistance patterns. It must be completed in full — a half-finished course breeds resistance and leaves the infection behind. Confirmation of cure with a repeat breath test or stool antigen at least four weeks after finishing is standard practice and is often skipped, which is a mistake.
Which brings me to the point of this section. Taking antacids or omeprazole for years without ever being tested is not treatment. It suppresses acid, so the symptoms quieten, so nothing gets investigated — while the underlying infection continues doing what it does to the stomach lining. Acid suppression can also mask the early symptoms of something more serious for long enough to matter.
Painkillers: The Cause Most People Never Suspect
Non-steroidal anti-inflammatory drugs — ibuprofen, diclofenac, mefenamic acid, naproxen, indomethacin, and aspirin — are one of the leading causes of stomach ulcers and upper gastrointestinal bleeding, and in Malaysia this is a bigger problem than it should be because these medicines are so easy to obtain. You can walk into most pharmacies and buy them. They are dispensed liberally for back pain, knee pain, period pain, headaches, gout and dental pain. Patients rarely think of them as risky, because they are not thought of as real medication.
The mechanism is not the tablet sitting in the stomach. NSAIDs block prostaglandins, which are what maintain the protective mucus layer and blood supply of the stomach lining. That means the damage happens whether the drug is swallowed, injected or applied as a suppository, and taking it with food reduces but does not remove the risk. Enteric coating does not make it safe either.
The risk is much higher in some people than others. Age over sixty-five. A previous ulcer or previous gastrointestinal bleed. Taking more than one NSAID at once — which happens constantly, because someone takes a prescribed diclofenac and then buys ibuprofen for a headache without realising they are the same class. Combining an NSAID with a steroid, with a blood thinner such as warfarin or a direct oral anticoagulant, with aspirin, or with an SSRI antidepressant. Existing H. pylori infection, which multiplies the risk substantially when combined with NSAID use.
What makes NSAID ulcers particularly dangerous is that they can be silent. The same drug that is causing the ulcer is also suppressing the pain that would have warned you about it. A significant number of patients who present with a bleeding ulcer — vomiting blood or passing black tarry stools — had no preceding stomach pain at all.
So when a patient with dyspepsia tells me they take nothing, I ask again, specifically. Any painkillers? Anything for your knees? Anything from the pharmacy? Anything a relative gave you? Any traditional or herbal preparation for joint pain, since some have been found adulterated with steroids or NSAIDs? The answer changes the management more often than any other single question.
Functional Dyspepsia and IBS: Real Conditions, Not "Nothing Wrong"
A large proportion of people with persistent upper abdominal symptoms have a completely normal endoscopy. This is one of the most badly handled moments in medicine. The patient is told the scope is clear, nothing is wrong, it is just stress — and walks out feeling dismissed, disbelieved and no better than before. That framing is both unkind and inaccurate.
Functional dyspepsia is a diagnosis, not an absence of one. The symptoms are genuine: bothersome fullness after meals, becoming full much earlier than expected, burning or pain in the epigastric region, often bloating and nausea. What is different is the mechanism. Instead of an ulcer or inflammation, the problem lies in how the stomach behaves and how its signals are processed — the stomach may not relax properly to accommodate food, it may empty at an abnormal rate, and crucially the nerves carrying sensation from the gut may be hypersensitive, so that a normal degree of stretch or a normal amount of acid registers as pain.
Irritable bowel syndrome is the equivalent in the lower gut: recurrent abdominal pain associated with defecation and with a change in stool frequency or form, with bloating, urgency, and alternating constipation and diarrhoea. It is common, it is not dangerous, and it is not imaginary.
The gut-brain axis is the honest explanation here, and it deserves to be explained properly rather than used as a polite way of saying it is in your head. The gut has its own extensive nervous system, in constant two-way communication with the brain. Stress, poor sleep, anxiety and depression measurably alter gut motility and the sensitivity of gut nerves — that is physiology, not weakness of character. Equally, chronic gut symptoms cause anxiety, which then amplifies the symptoms. It runs in both directions. Previous gastroenteritis can trigger post-infectious IBS lasting months or years.
Management is different from ulcer management and works when it is taken seriously: regular meal patterns rather than restriction, identifying genuine individual triggers rather than blanket elimination, addressing sleep and stress properly, and where appropriate medication aimed at gut sensitivity and motility rather than at acid. Some patients benefit substantially from a structured low-FODMAP approach for IBS, ideally with dietitian guidance rather than self-imposed.
Gallstones and the Other Causes Worth Knowing
Gallstones are common in Malaysia and frequently mistaken for gastric, because the pain sits high in the abdomen and is provoked by food. The distinction matters, because the treatment is surgical rather than medical.
The typical presentation is biliary colic: a severe, steady, gripping pain in the right upper abdomen or epigastrium, building over thirty to sixty minutes, lasting anywhere from half an hour to a few hours, then settling. It classically follows a fatty or heavy meal — a rich curry, fried food, santan-heavy dishes — and often strikes in the evening or wakes the patient in the early hours. It may radiate to the right shoulder blade or the back, and is usually accompanied by nausea and sometimes vomiting. Between attacks the patient feels entirely normal, which is why it is so often dismissed.
The classic risk profile still holds reasonably well: female, forties, overweight, and having had children, with rapid weight loss and diabetes adding to it. But we see gallstones across a much wider range than that in practice, including in younger men.
The investigation is an abdominal ultrasound, which is quick, painless, involves no radiation, and is very good at detecting stones in the gallbladder. This is one of the more satisfying investigations in general practice — a patient who has been treated for gastric for two years gets a scan and has the actual answer within twenty minutes. Klinik Muhibbah has ultrasound available.
What turns gallstones from a surgical waiting-list problem into an emergency is inflammation or obstruction: persistent pain lasting more than six hours, fever, tenderness so marked that the patient catches their breath when you press under the right ribs, or jaundice with dark urine and pale stools. Cholecystitis and cholangitis need hospital admission.
Other causes worth holding in mind. Pancreatitis, most often from gallstones or alcohol, presenting as severe epigastric pain radiating to the back with vomiting and requiring urgent admission. Coeliac disease and lactose intolerance, the latter common across Asian populations and easily missed. Constipation, which causes a genuinely large amount of abdominal pain. Inflammatory bowel disease. Kidney stones. And in women, gynaecological causes that must always be considered when pain sits in the lower abdomen.
Red Flags: The Features That Must Never Be Self-Treated
This is the most important clinical section on this page, and if you remember nothing else, remember these. In medicine we call them alarm features. Their presence changes a case from something a GP can treat and monitor into something that requires investigation, usually endoscopy, and usually without delay.
Unintentional weight loss. Losing weight without trying — clothes looser, belt tightened, a few kilograms over a few months that you cannot account for — alongside stomach symptoms is a red flag, full stop. It is never reassuring.
Difficulty swallowing, or dysphagia. Food sticking on the way down, or the sensation of having to swallow twice, or having progressed from struggling with meat and bread to struggling with soft food and then liquids. Progressive dysphagia is treated as oesophageal cancer until proven otherwise.
Persistent vomiting, particularly vomiting undigested food from meals eaten hours earlier, which can indicate that the stomach outlet is obstructed.
Vomiting blood, whether bright red or the dark coffee-ground appearance of partially digested blood. Black, tarry, foul-smelling stools — melena — which is blood that has passed through the gut. Both are emergencies.
Anaemia, or iron deficiency found on a blood test with no obvious explanation. This often means slow, invisible bleeding from somewhere in the gut, and in an older adult it demands investigation of both the upper and lower gastrointestinal tract.
A lump or mass that you or a doctor can feel in the abdomen. Jaundice — yellowing of the eyes or skin. New-onset dyspepsia beginning after the age of forty-five to fifty, where the threshold for scoping is much lower simply because the background risk of malignancy rises with age. A family history of gastric or oesophageal cancer, particularly in a first-degree relative.
Gastric cancer is the problem these features are designed to catch. Its early symptoms are indistinguishable from ordinary indigestion, which is precisely why it is so often diagnosed late in Malaysia and why survival figures here remain poor. Within Malaysia, incidence has consistently been reported as highest among Chinese Malaysians, followed by Indian Malaysians, with lower rates among Malays — a pattern likely reflecting a mix of H. pylori strain differences, dietary factors including salted and preserved foods, and genetics.
If any alarm feature is present, do not buy another box of antacids. Get assessed.
The Malaysian Habit That Delays Diagnosis
There is a specific pattern I see repeatedly in this clinic, and it is worth naming because recognising yourself in it may be the most useful thing you get from this page.
A patient develops stomach discomfort. They call it gastric. They buy something for it at the pharmacy — an antacid suspension, maybe famotidine, increasingly omeprazole, which in recent years has become something people take almost as casually as paracetamol. It helps. The symptoms settle. When it comes back, they buy more. Perhaps they add a traditional remedy, or jamu, or a herbal preparation recommended by a relative or bought online with claims about healing the stomach. Perhaps someone suggests it is angin — trapped wind — and they get an urut massage, or use minyak angin, or take a carminative preparation.
I want to be careful here. I am not dismissing traditional practice, and I am not telling anyone that their grandmother's remedy is worthless. A great deal of it is harmless and some of it is genuinely soothing. The problem is not what people take. The problem is time.
Because acid suppression works, symptoms can be controlled for months or years while whatever is causing them continues unchecked. The H. pylori infection is never tested for. The NSAID that is quietly eroding the stomach lining is never identified. The ten kilograms lost over eight months gets attributed to eating less because of the gastric. The difficulty swallowing gets explained away as food not going down well because of the gastric. By the time somebody finally scopes them, the disease that started as something curable has become something that is not.
Two additional cautions. First, some herbal and traditional products sold for pain and general wellness have been found by our own authorities to be adulterated with undeclared steroids or NSAIDs — the very drugs that cause ulcers. If you take something and it works remarkably fast on joint pain, that is a reason for suspicion, not reassurance. Second, long-term unsupervised proton pump inhibitor use is not benign; it has been associated with reduced absorption of vitamin B12, magnesium, calcium and iron, and with increased risk of certain gut infections. PPIs are excellent drugs used properly, for a defined reason and a defined duration, with a plan to review.
What a GP Can Actually Do for Stomach Pain
If you are searching for a stomach pain specialist, you may be surprised to hear that seeing a GP first is usually the right move — and I will explain why honestly rather than defensively.
Most abdominal pain that walks into a general practice can be diagnosed and treated in general practice. A careful history is the single highest-yield diagnostic tool in this entire field, and it takes time: where exactly, what character, what makes it better or worse, relation to meals and to hunger, night symptoms, bowel habit, weight, appetite, swallowing, every medication and supplement including what was bought without a prescription, alcohol, smoking, family history. Then an examination — the abdomen palpated properly for tenderness, guarding, masses, an enlarged liver or spleen, and where relevant a rectal examination, which is unglamorous and frequently decisive.
From there, a GP can investigate. A full blood count looking for anaemia or infection. H. pylori testing by breath or stool. Liver function tests. Amylase or lipase where pancreatitis is a consideration. Kidney function, blood glucose and HbA1c. Urine testing. Stool tests including faecal occult blood. Coeliac serology in the right context. And abdominal ultrasound, which answers the gallstone question and gives useful information about the liver, kidneys and pancreas. Klinik Muhibbah offers blood tests and ultrasound on site.
A GP can then treat the majority of what turns up: reflux with a proper acid suppression course and a genuine conversation about meal timing and weight, H. pylori with a full eradication regimen and confirmation of cure, NSAID-related disease by stopping the culprit and healing the lining, functional dyspepsia and IBS with the specific approaches those conditions need, constipation, gastroenteritis, and the long tail of ordinary causes.
And where it is beyond us, a GP refers — with a letter that says what was found, what was tried, and what specific question needs answering. That letter is worth real money to you. Walking into a gastroenterologist cold means paying specialist rates to have the basic history and the basic bloods done that a GP could have completed for far less, and arriving with them already done usually means the specialist can move straight to the decision that actually needs their expertise.
Klinik Muhibbah is a general practice, established in Masai in 1975. We are not a gastroenterology centre. Endoscopy and specialist management happen elsewhere, on referral, and we will say so plainly when that is what you need.
When We Refer You to a Gastroenterologist or Surgeon
Referral is not a failure of general practice. It is one of its functions, and knowing when to do it quickly is a large part of the job.
I refer for endoscopy — OGDS, oesophago-gastro-duodenoscopy, the camera test through the mouth — when any alarm feature is present, and I do it urgently. That means unexplained weight loss, dysphagia, persistent vomiting, evidence of bleeding, unexplained iron deficiency anaemia, a palpable mass, or new dyspepsia starting over the age of forty-five to fifty. I also refer when a patient has completed appropriate treatment and remains symptomatic, when H. pylori has failed to clear after a second eradication attempt, when reflux has been severe and long-standing enough to warrant assessment for Barrett's oesophagus, when a proven gastric ulcer needs healing confirmed and biopsy taken, and when there is a strong family history of upper gastrointestinal cancer.
A scope is a day procedure, usually done under sedation, and takes a few minutes. Patients dread it far more than the reality justifies. It allows direct inspection of the oesophagus, stomach and duodenum, biopsy of anything abnormal, testing for H. pylori on the tissue itself, and treatment of a bleeding point if one is found. Colonoscopy is the equivalent for the lower gut and is indicated for a persistent change in bowel habit, rectal bleeding, unexplained anaemia, or colorectal cancer screening.
I refer to a general or upper gastrointestinal surgeon for symptomatic gallstones, since the definitive treatment is laparoscopic removal of the gallbladder, and for hernias, suspected appendicitis and surgical abdomens — the last two going directly to hospital rather than to a clinic appointment. Suspected malignancy goes urgently down whichever pathway gets it seen fastest.
On cost, because it matters and because people avoid referral over it: government hospital gastroenterology services are available across Johor, and while waiting times for a non-urgent scope can be long, urgent cases with alarm features are prioritised. Private endoscopy is faster and considerably more expensive. We will discuss both routes with you honestly. What we will not do is tell you a scope can wait when it cannot.
For pricing at our clinic, please contact us directly — the only figure we publish is the RM30 teleconsultation fee, because everything else depends on what you actually need.
Practical Management That Actually Works
Most advice given for gastric in Malaysia is a list of forbidden foods. It rarely works, because it is unsustainable, it makes eating miserable, and it usually targets the wrong variable. What works better is changing the pattern of eating rather than the contents of the plate.
Start with timing. Nothing substantial within three hours of lying down. If your shift ends at eleven, eat the main meal earlier in the shift and keep the post-shift meal light — this is the single highest-impact change available to most of our patients, and it costs nothing. Raise the head of the bed by fifteen to twenty centimetres with blocks under the legs if night symptoms are prominent; piling up pillows does not work, because it bends you at the waist and raises abdominal pressure.
Then portion size. Smaller, more frequent meals load the stomach less than two enormous ones. Eat slowly. Do not eat standing at a stall in four minutes between tasks.
On triggers, be specific rather than sweeping. Rather than banning all spicy food forever, keep a two-week note of what you ate and when symptoms came, and cut what actually correlates for you. For many patients it turns out to be coffee, or fried food, or the volume rather than the chilli.
Weight matters, particularly around the middle, because abdominal pressure drives reflux directly. Even five to ten percent of body weight makes a noticeable difference. Stopping smoking helps reflux and helps ulcers heal — and quitting is available with support. Alcohol should be reduced. Regular moderate exercise improves both reflux and functional gut symptoms.
On medication, use PPIs the way they are meant to be used: taken thirty to sixty minutes before the first meal of the day, for a defined course, with a plan to review and step down rather than continue indefinitely on repeat. If you have been on omeprazole for over a year without anybody reassessing why, that is a conversation to have, and stopping abruptly after long-term use can cause rebound acid symptoms, so it is done gradually.
And if the symptoms are not settling, or any alarm feature appears, stop managing it yourself. WhatsApp us at +60 17-500 7205 or call +60 7-251 1162. We are at No. 62 Jalan Kiambang, Taman Bunga Raya, 81700 Masai, Johor, open Monday to Thursday and Saturday 9AM to 9PM, Friday 9AM to 3PM, and Sunday 9AM to 1PM. Dr. Prabagaran Kanapathy (MMC 63651) and Dr. Kirubah Sai Patnaik (MMC 93850) see patients across these hours.