Scorpion and Centipede Stings in Sri Lanka: What Travelers Need to Know

A handful of travelers come through our doors every season having stepped into a sandal or reached into a beach bag and found a scorpion or centipede already there. It’s one of the more startling ways to start a holiday, and almost always more frightening than dangerous. Here’s what actually happens, how to avoid it, and what to do if it happens to you.

What’s actually out there

Sri Lanka has several scorpion species and a number of large centipedes, and both turn up around Arugam Bay, especially in guesthouses with gardens, cabanas close to vegetation, and rooms with gaps under doors. They like dark, undisturbed spaces: inside shoes left outside overnight, folded towels, stacked beach bags, gaps in wooden furniture, under mats.

Neither is aggressive. They don’t hunt people. Every sting or bite we see is defensive — something got squeezed, stepped on, or surprised, usually a hand going into a shoe or a foot going into one in the dark.

Sri Lanka’s scorpions are not among the world’s dangerous species. The black scorpion (Heterometrus) is the one most commonly seen and looks alarming but delivers a sting closer to a bad wasp sting than anything life-threatening. Centipedes here can grow to an intimidating size, and their bite is genuinely more painful than a scorpion sting, but it’s a local reaction, not a systemic poisoning.

Prevention

This is almost entirely about habits, and the habits are simple:

• Shake out your shoes before putting them on, every time, especially if they’ve been left outside or on a porch overnight. This single habit prevents most of the cases we see.
• Check before you sit or lie down on cushions, mats, or towels that have been on the ground or on an outdoor chair.
• Keep beach bags zipped when not in use, and give them a shake before reaching in.
• Use a torch when walking barefoot at night, whether that’s to the bathroom in a cabana or across a garden path.
• Close gaps under doors where possible, and ask your guesthouse about screening if your room backs onto dense vegetation.
• Don’t put hands into places you can’t see — under rocks, into woodpiles, behind furniture — without checking first.

What a sting or bite feels like

A scorpion sting is immediate, sharp, burning pain at the site, sometimes with localized swelling, redness, and numbness or tingling that can spread a short distance from the sting. It’s intense for the first hour or two and then eases steadily over the following day.

A centipede bite tends to hurt more at the outset — centipedes bite with claw-like legs near the head rather than stinging, and it can leave two small puncture marks with significant swelling and throbbing pain, occasionally with the skin around it going red or slightly discoloured for a few days.

Both are, for the large majority of otherwise healthy adults, unpleasant rather than dangerous.

First aid

• Clean the site with soap and water.
• Apply a cold compress or ice wrapped in cloth for ten to fifteen minutes at a time. This is the single most effective thing you can do for pain from either a scorpion sting or a centipede bite.
• Take paracetamol or ibuprofen for pain, at standard adult doses, unless you have a reason not to take one of those (for example, if dengue is a possibility, avoid ibuprofen and other NSAIDs).
• Keep the affected limb elevated and still where practical, which helps with swelling.
• Don’t apply a tourniquet, cut the site, or try to suck out venom. None of that helps, and cutting or sucking can introduce infection.

Pain from a scorpion sting usually peaks within an hour or two and fades over a day. Swelling and soreness from a centipede bite can take a few days to fully settle.

When to come see us

Most stings and bites resolve with home care alone, but come in — or call us first if you’re unsure — if you notice:

• Signs of an allergic reaction: widespread hives, swelling of the lips, tongue, or throat, difficulty breathing, or dizziness. This needs urgent attention. Call 1990 for a free ambulance if breathing is affected.
• Pain that keeps getting worse rather than easing after the first day
• Spreading redness, warmth, or pus around the site a day or two later, suggesting infection
• A sting or bite in a young child, an older traveler, or anyone with a chronic heart or lung condition
• Numbness or tingling that spreads well beyond the local area, or any muscle spasm, which is uncommon but worth having checked
• Uncertainty about your tetanus status, since any puncturing bite is a reasonable trigger to check it

We can manage pain properly, watch for a developing allergic reaction, and give you a tetanus booster or antibiotics if the wound needs them. We also give itemised English receipts and can help you deal with your travel insurer if a claim is needed.

Related reading

• Snake Bites in Sri Lanka: Real First Aid, Not Movie Myths
• Allergic Reactions in Sri Lanka: Recognizing and Treating Them

---

This article is general health information and not a substitute for medical advice. If you’ve been stung or bitten and you’re not sure how serious it is, walk in and see us any time, day or night, or call 1990 for emergency transport.