Medically reviewed by Dr. Ponlawat Pitsuwan, Physician, Takecare Clinic Phuket. Last reviewed: September 2026.
I see stomach lining irritation often in visitors, usually after a combination of alcohol, spicy food and anti-inflammatory painkillers taken for a sore back or a hangover. Most cases settle with the right medicine and a few days of gentler habits, but some warning signs need prompt investigation.
Gastritis in Phuket often follows a pattern we recognise: several late nights of drinking, a few ibuprofen for a sore head or a twisted ankle, and chilli-heavy meals eaten on an empty stomach. The result is a burning or gnawing pain just below the breastbone, morning nausea and a feeling of fullness after a few mouthfuls. Some visitors arrive with a longer-running stomach problem that the holiday has simply stirred up. Either way, the lining usually recovers well once the irritants stop and the acid is turned down.
What inflames the stomach lining
The stomach protects itself from its own acid with a layer of mucus and bicarbonate. Gastritis develops when that barrier is damaged, either suddenly (acute gastritis) or over months and years (chronic gastritis). Three causes account for most cases.
Alcohol irritates the lining directly and increases acid production, so a run of heavy nights is a classic trigger. Non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen, diclofenac, naproxen and aspirin block prostaglandins, the chemical messengers that keep the protective mucus layer thick, which is why they can inflame or ulcerate the stomach even at ordinary doses. Helicobacter pylori is a common bacterium that lives in the stomach lining, often picked up in childhood, and is the main cause of chronic gastritis and peptic ulcers worldwide.
Smoking, bile reflux and the stress of a severe illness also play a part. Spicy food deserves a fair hearing: chilli does not cause ulcers, but it can sting an already inflamed lining and make symptoms feel worse.
Is it gastritis, or something that looks like it?
Upper abdominal pain has several causes, and a few are emergencies. This is how we tell them apart.
| Condition | Where it hurts | Typical clues |
|---|---|---|
| Gastritis | Upper middle abdomen, below the breastbone | Burning, nausea, early fullness, worse after alcohol or painkillers |
| Peptic ulcer | Same area, sometimes through to the back | Gnawing pain, often at night, linked to meals; can bleed |
| Acid reflux | Behind the breastbone, into the throat | Heartburn, sour taste, worse lying down |
| Gallstone pain | Upper right abdomen, right shoulder | Hours of steady pain after a fatty meal |
| Pancreatitis | Upper abdomen boring through to the back | Severe constant pain and vomiting, often after heavy drinking; hospital needed |
| Heart attack | Chest or upper abdomen, arm, jaw | Pressure, sweating, breathlessness; call 1669 |
Gastritis also differs from the other stomach problems we see. Sudden vomiting within hours of one meal is more typical of food poisoning, and frequent loose stools point towards a bowel infection rather than an inflamed stomach.
How we assess and treat gastritis
We ask about the pain, alcohol and every medicine you take, especially painkillers, steroids and blood thinners, and about black stools, weight loss or trouble swallowing, then examine your abdomen. A complete blood count shows anaemia from slow bleeding, and liver tests or lipase, a pancreas enzyme, help when pain is severe. We can arrange H. pylori testing by stool antigen or breath test, ideally two weeks after stopping acid-reducing tablets. UK NICE guidance advises urgent endoscopy, a camera test of the stomach, for anyone with difficulty swallowing and for people aged 55 or over with weight loss and upper abdominal pain, so we refer when that applies.
Treatment starts with removing the cause: stopping NSAIDs, using paracetamol for pain instead, and pausing alcohol. A proton pump inhibitor (PPI) such as omeprazole, esomeprazole or pantoprazole switches off much of the acid production, taken 30 to 60 minutes before breakfast, usually for about 4 weeks. Famotidine, an H2 blocker, is an alternative, and antacids or alginates give quick relief while the PPI takes effect. If H. pylori is found, eradication combines a PPI with two antibiotics, such as amoxicillin with clarithromycin or metronidazole, for 7 to 14 days, followed by a retest at least four weeks later.
Looking after your stomach while it heals
Eat smaller meals more often rather than one large dinner, and avoid eating within three hours of lying down. Go easy on very spicy, fatty and acidic foods, coffee and fizzy drinks for a week or two, not because they caused the problem but because they sting while the lining repairs. Give alcohol a complete break for at least several days, and stop smoking if you can, since it slows healing. If vomiting has left you dry, small sips of oral rehydration salts help; a hangover IV drip rehydrates faster, though its evidence goes little beyond fluids and anti-sickness relief.
The Phuket pattern: nightlife, painkillers and training camps
Our gastritis patients tend to fall into three groups. Nightlife visitors combine spirit buckets, late meals and too little sleep. Muay Thai, diving and fitness-camp guests often take anti-inflammatory tablets daily for sore muscles, frequently without food. And scooter riders nursing a sprain may take ibuprofen or diclofenac from a pharmacy without realising it can damage the stomach. Add seasickness on an empty stomach before a boat trip, and a sensitive stomach can tip into a full flare.
When to see a doctor
Mild gastritis after a heavy weekend usually settles within a few days of rest from alcohol and painkillers. See a doctor if symptoms last more than a week despite antacids, keep coming back, or come with unintended weight loss, difficulty swallowing or persistent vomiting. If you take blood thinners, steroids or daily aspirin, or you are 55 or over with new indigestion, come in sooner.
Prevention and early detection
If you need an anti-inflammatory painkiller, take the lowest dose for the shortest time, always with food, and ask about a protective PPI if you have had an ulcer before or are over 65. Eat before you drink, alternate alcoholic drinks with water and set a limit before the night starts. Early detection matters because H. pylori can cause silent damage for years: recurring indigestion, a past ulcer or a family history of stomach cancer are good reasons to be tested and treated, which also lowers the long-term risk of ulcers.
Seeing a doctor for stomach pain in Phuket
Our three clinics are open 24/7: the Bangtao (Cherngtalay) clinic, the Kata-Karon clinic and the Patong clinic. Walk in without an appointment, or send a quick message on WhatsApp first; you can also ring +66 81 718 9080. You are usually seen within minutes, and our on-site pharmacy means you leave with your medicines. Our walk-in doctor in Phuket page explains the visit.
If you feel too unwell to travel, book a doctor hotel visit in Phuket at any hour. Most travel insurers can be billed directly; if yours cannot, you leave with a receipt, medical report and itemised invoice to claim yourself. We confirm the price on WhatsApp before your visit.
Related services and treatments
If vomiting started within hours of a specific meal, our food poisoning treatment page fits better. Loose stools that build over your first week abroad are covered under traveller’s diarrhoea treatment, and our general guide to diarrhoea treatment covers longer-running bowel symptoms. For other problems, see our list of conditions we treat.
Summary
Gastritis is an inflamed stomach lining, usually caused by alcohol, anti-inflammatory painkillers or H. pylori. It brings burning upper abdominal pain, nausea and early fullness, and it responds well to removing the trigger and taking a PPI for a few weeks. The key safety step is to recognise the red flags, black stools, vomiting blood and severe or back-boring pain, which need a hospital rather than an antacid.
“If you take ibuprofen or similar painkillers, take them with food, or ask us about a safer option. Black stools or vomiting blood need medical attention straight away.”
Dr. Ponlawat Pitsuwan, Physician, Takecare Clinic Phuket
Frequently asked questions
Will travel insurance cover a gastritis visit, and how much will it cost?
A sudden stomach flare on holiday is usually covered, but many policies exclude pre-existing conditions, so a long-standing ulcer problem may not be. Check your wording. We direct-bill most travel insurers and otherwise provide a receipt, medical report and itemised invoice. Costs depend on the consultation, medicines and any tests, and we confirm the price on WhatsApp before your visit.
How fast will the burning ease once I start treatment?
Antacids and alginates work within minutes but only for a few hours. A proton pump inhibitor such as omeprazole takes a day or two to reach full effect, and most people feel clearly better within a week. The lining needs several weeks to heal completely, so finish the course even when the pain has gone.
Do I need an appointment for stomach pain, or can I walk in?
You can walk in at any hour; no booking is needed at any of our three clinics. Bring the painkillers or other medicines you have been taking, or photos of the packets, since they are often the cause. If the pain is severe or you have seen black stools, tell the front desk straight away so you are assessed first.
Can a doctor treat gastritis at my hotel after a heavy night?
Yes. A doctor can visit your hotel, villa or condo anywhere in Phuket, day or night. The visit includes an examination to rule out more serious causes, acid-reducing and anti-sickness medicine, and fluids through a drip if you have been vomiting. If anything suggests bleeding or pancreatitis, we arrange hospital transfer directly.
Does Thai chilli actually cause gastritis?
No. Research does not show that chilli causes gastritis or ulcers, and capsaicin, the compound that makes chilli hot, may even have some protective effects. However, when your stomach lining is already inflamed, spicy food can sting and make symptoms feel worse. Ease off while you heal, then reintroduce it gradually.
Could H. pylori be behind my stomach pain, and can I be tested in Phuket?
It is a real possibility if your indigestion keeps returning or you have had an ulcer. H. pylori is a common stomach bacterium that causes chronic gastritis and most peptic ulcers. We can arrange a stool antigen or breath test; stop acid-reducing tablets two weeks before for an accurate result. If positive, a one to two week antibiotic course usually clears it.
Sources
The NHS page on gastritis summarises causes, symptoms and treatment. The US National Institute of Diabetes and Digestive and Kidney Diseases explains gastritis and gastropathy, including H. pylori and NSAID causes. The NHS guide to stomach ulcers covers bleeding warning signs.
gastritis, acute gastritis, chronic gastritis, dyspepsia, indigestion, peptic ulcer, Helicobacter pylori, NSAIDs, ibuprofen, diclofenac, aspirin, proton pump inhibitor, omeprazole, esomeprazole, pantoprazole, famotidine, alginate, amoxicillin, clarithromycin, metronidazole, H. pylori stool antigen test, urea breath test, endoscopy, NICE, NHS, NIDDK, Bangtao, Kata, Karon, Patong, Takecare Clinic Phuket, Dr. Ponlawat Pitsuwan
This page is general health information and not a substitute for a medical consultation.