Travelling Out of Australia with Diabetes — What Happens When Something Goes Wrong on the Other Side of the World

I've had one genuine diabetes emergency abroad.

A severe hypo in a taxi in Hanoi at two in the morning, with a driver who didn't speak a word of English. It resolved. It left me shaken for days. And it taught me more about managing diabetes on the road than every pre-trip checklist I'd ever written had managed to do.

DKA is the one I haven't had — and the one that sits at the back of my mind on every long trip. Because it doesn't announce itself. It creeps in slowly, disguising itself as jetlag or a dodgy meal or the general heaviness of too many early flights. By the time the picture becomes clear, you're already in trouble.

Most of us who travel with diabetes spend a good chunk of our preparation time on the ordinary stuff — what to eat, how to keep insulin cool through a long-haul from Sydney, how to get through airport security without being pulled aside and questioned about every item in your diabetes kit.

What we spend far less time on is the extraordinary. The moments when something goes genuinely, seriously wrong, on the other side of the world, where no one knows your medical history and the nearest emergency department is a long way away.

This article is about those emergency moments. What they look like. What to do. And how to prepare well enough that they're unlikely to happen at all.

👉 Food is one of the biggest variables in blood glucose management when you're travelling. If that side of things feels uncertain, our guide on eating abroad with diabetes covers everything from carb-counting in Japan to navigating restaurant menus when no one speaks English.

The two emergencies every diabetic traveller needs to be ready for

Severe hypoglycaemia

Hypoglycaemia abroad is more likely than it is at home. You're walking further than usual, eating at unpredictable times, miscalculating unfamiliar foods, and your routine has been turned upside down by time zones and long-haul travel. Any one of those things can push blood glucose lower than you're expecting. Combined, they can do it fast.

Mild lows are manageable. A severe hypo — one where you lose the ability to treat yourself — is a medical emergency. Diabetes Australia defines severe hypoglycaemia as an episode requiring assistance from another person to treat. It can cause seizures, loss of consciousness, and if left untreated, it can be life-threatening.

Travelling abroad adds layers of risk that simply don't exist at home:

• You may be travelling solo, or further from your travel companions than usual.
• The person nearby may have no idea what's happening or what to do.
• Emergency services may take considerably longer to reach you than they would in Australia.
• Paramedics may not speak English — and a translation app on 2% battery isn't a plan.

✅ What to do:

• Always carry fast-acting glucose on your person — in your pocket, not buried in your daypack.
• Brief the people you're travelling with on what a hypo looks like and exactly what to do. Don't assume they'll work it out under pressure. Walk them through it before you leave Australia.
• If you're travelling solo, wear a medical ID. MedicAlert is recognised internationally and can communicate your condition to emergency responders even when you're not in a position to speak for yourself.
• Carry a glucagon emergency kit. In Australia, the primary option available is the GlucaGen HypoKit — a prescription emergency glucagon injection available through your GP. Baqsimi, the nasal glucagon spray widely used in other countries, has TGA approval but is not yet commercially available in Australia. Talk to your GP or endocrinologist about the right option for you, and make sure whoever's travelling with you knows where it is and how to use it before you board the plane.

👉 Our guide on airport security rules for diabetic travellers in Australia covers what to pack in your carry-on — including glucagon and supplies — and your rights at the terminal security checkpoint.

Diabetic ketoacidosis (DKA)

DKA sits at the opposite end of the spectrum — too little insulin, rather than too much.

It develops gradually, which is precisely what makes it dangerous when you're on the road. You feel tired. A bit off. You put it down to the red-eye, or something you ate, or the fact that you've been going hard for two weeks straight. And then you're in a foreign hospital on a drip you weren't expecting.

Diabetes Australia describes DKA as one of the most serious acute complications of diabetes — a condition that develops when the body starts breaking down fat for fuel due to insufficient insulin, producing ketones that make the blood dangerously acidic. The symptoms are easy to miss at first: excessive thirst, frequent urination, nausea, vomiting, stomach pain, weakness, confusion, and breath that smells faintly of acetone — sometimes described as fruity, or a bit like nail polish remover.

🚨 DKA requires hospital treatment. IV fluids and insulin. It cannot be managed in a hotel room, and it won't pass on its own. If you suspect DKA, get yourself to an emergency department. Don't wait to see if you feel better in the morning.

✅ What to do:

• Know the symptoms by heart: excessive thirst, frequent urination, nausea and vomiting, stomach pain, weakness, confusion, acetone-smelling breath, and deep or laboured breathing.
• The catch when you're travelling is that several of these — thirst, fatigue, needing the bathroom a lot — are easy to write off as dehydration or jetlag. That's exactly why checking ketones whenever blood glucose is running persistently high matters, rather than waiting for symptoms to pile up.
• Pack ketone testing strips. They weigh nothing, take up almost no space, and can be the difference between catching something early and ending up in emergency care overseas.
• Check ketones any time your blood glucose is running persistently high — especially if you're unwell, or if your insulin may have been compromised by heat.
• If ketones are moderate or high alongside symptoms, don't sit on it. Get to a hospital.

The travel preparation that actually makes a difference

Know how to say it before you land

Before you arrive anywhere, write down the following phrases in the local language and save them to your phone — and to something that doesn't rely on battery or mobile data:

• "I have type 1 / type 2 diabetes"
• "I need sugar"
• "I need a doctor"
• "I have glucagon in my bag"

A lot of experienced diabetic travellers carry a printed medical card in the local language summarising their condition, medications, and emergency instructions. It sounds like overkill until you actually need it. Google Translate works offline if you download the language pack before you leave home — genuinely invaluable in a rural area with no reception, or anywhere that uses a script you can't read at all.

Know where to go before anything goes wrong

Before you arrive somewhere new, spend five minutes identifying the nearest hospital with a proper emergency department — not a clinic or a walk-in centre, an actual ED.

In many parts of Asia, Latin America, and Eastern Europe, private hospitals typically provide faster, better-equipped care for foreign visitors than public ones, and your travel insurer will usually cover them. Save the address and phone number before you need it, not while you're panicking.

👉 Travelling without the right insurance is a risk that's genuinely not worth taking. Our guide on travel insurance for diabetic travellers breaks down exactly what to look for — including coverage for insulin loss, emergency hospitalisation, and medical evacuation back to Australia.

Know what compromised insulin looks like — and when to suspect it

Heat damage to insulin is not always visible. There may be no cloudiness, no colour change, no obvious sign at all — your pen can look completely normal whether the insulin inside is fully effective or completely degraded. If your insulin has been exposed to temperatures above 25°C for an extended period, or your blood glucose is running inexplicably high despite correct dosing, suspect the insulin before you suspect yourself.

This is exactly why a medical-grade insulin travel cooler isn't optional — it's a safety item. Australia's climate alone should make this obvious: if we know what 40°C does to a car parked in the sun, we know what it does to a medication that's supposed to stay refrigerated. After years of improvising with hotel ice buckets and damp cloths, switching to a proper medical-grade cooler was one of the most consequential changes I made to how I travel. My insulin arrives viable, every single time.

👉 For everything worth knowing about keeping insulin at the right temperature throughout a trip — from long-haul flights to days in extreme heat — our guide on how to keep insulin cool when travelling covers every situation.

Travel insurance for diabetes: genuinely not optional

I'll be direct: travelling overseas with diabetes and without specialist travel insurance is not a risk worth taking. Full stop.

Medicare covers you at home. Step off the plane overseas and that cover — with a handful of exceptions — is gone.

Smartraveller puts it plainly: most countries won't give you free or subsidised care, and hospitals in some countries will refuse to treat you without upfront payment or insurance details. Even in an emergency. Even if it means you might die.

Australia has reciprocal health care agreements with eleven countries — but these cover emergency treatment only, explicitly don't cover medical evacuation, and are not a substitute for insurance.

A DKA hospitalisation abroad can run into tens of thousands of dollars. An emergency medical evacuation back to Australia can reach six figures.

Standard travel insurance policies frequently exclude pre-existing conditions entirely — meaning a diabetes-related emergency may not be covered unless you've specifically declared your condition and chosen a policy that covers it.

You must disclose your diabetes when applying for travel insurance. Failing to do so could void your entire policy at exactly the moment you need it most. Some insurers may decline to cover you — which is frustrating, but legal, and better to know before you go than to discover after something's gone wrong.

When you're choosing a travel insurance policy for diabetes, look specifically for:

• Explicit coverage of your pre-existing condition — Type 1 or Type 2, declared upfront in the medical screening
• Coverage for lost, stolen, or damaged medication and supplies — including insulin, testing equipment, and pumps
• Emergency medical evacuation back to Australia
• A 24-hour medical assistance line with translation services
• Read the PDS, not just the headline — the exclusions section is where it matters

👉 Crossing multiple time zones — which is unavoidable when you're flying out of Australia — adds a real layer of complexity to insulin management. Our guide on managing insulin across time zones is essential reading before any trip involving a significant time difference.

The diabetes emergency kit that belongs in your carry-on — every time, no exceptions

Based on personal experience and guidance from Diabetes Australia and the NDSS, here's what I consider non-negotiable for every trip overseas:

• Fast-acting glucose — in your pocket, not your bag
• GlucaGen HypoKit (discuss options with your GP or endocrinologist before you travel)
• Ketone testing strips
• At least twice the insulin you think you'll need — flying from Australia, you are not ducking back to the chemist
• A diabetes travel letter from your GP or endocrinologist confirming your condition, medications, and all medical supplies you're carrying
• Your NDSS card — useful proof for airline and airport security that you need to carry your diabetes equipment
• Copies of all scripts, kept somewhere separate from the originals
• Travel insurance documents with the 24-hour emergency number written down somewhere that doesn't need a charged phone
• A MedicAlert bracelet or medical ID
• A medical-grade travel cooler if you're on insulin, Ozempic, Mounjaro, or any other temperature-sensitive medication

👉 For a full pre-departure checklist covering medications, documentation, and getting through airport security, our complete guide to travelling with diabetes has everything in one place.

The bigger picture

Diabetes emergencies abroad are rare. With the right preparation, they're rarer still.

The goal of this article isn't to put you off going anywhere — quite the opposite. Australians travel long distances to get anywhere worth going. The distances involved mean the preparation matters more, not less. But they also mean that when you do go — when you've sorted the kit and the insurance and the documentation and the cooler — you are properly, fully going somewhere. And that is absolutely worth the preparation it takes to get there.

I've had one emergency in forty countries. It resolved. I've also had thousands of extraordinary meals, hundreds of flights, and more experiences than I know how to count. The preparation made the difference — not by stopping every difficult moment, but by making sure that when difficult moments came, they were manageable rather than catastrophic.

Don't let the fear of an unlikely moment keep you from the extraordinary ones.

💬 We Want to Hear From You!

Have you ever had a diabetes emergency abroad — or a close call that taught you something you wish you'd known before you left Australia?
Share it in the comments below. The more honestly we talk about the hard moments, the better prepared everyone in this community becomes.