As always, a good travel-insurance policy is a wise idea. Laos is generally considered a high-risk area, and with limited medical services it's vital to have a policy that covers being evacuated (medivaced), by air if necessary, to a hospital in Thailand. Read the small print in any policy to see if hazardous activities are covered; rock climbing, rafting and motorcycling often are not.
If you undergo medical treatment in Laos or Thailand, be sure to collect all receipts and copies of the medical report, in English if possible, for insurance purposes.
Worldwide travel insurance is available at www.lonelyplanet.com/bookings. You can buy, extend and claim online anytime – even if you’re already on the road.