For many RVers, a “Rocky Mountain High” is that unpleasant feeling when nausea, headache, and fatigue happens the day they begin a mountain vacation.
Altitude sickness (also known as Acute Mountain Sickness or AMS) is an issue that most RVers will encounter in their travels, but thankfully there are easy ways to prevent and deal with it.
Who gets altitude sickness?
You don’t have to be a mountain climber tackling Mount Everest in order to get sick from AMS. Young or old, healthy or not, anyone can be affected when traveling up from sea level, especially if they aren’t used to mountains.
AMS is more likely to happen at elevations over 8,000 feet but you can be affected by it anywhere above sea level if you’re not used to mountains. Although persons with heart and lung problems are far more susceptible to the illness, if you’ve had it once you are likely to get it again. And if you don’t treat it, you may end up spending your RV vacation in the emergency room so it’s wise to know prevention strategies.
First, acclimate slowly.
The faster you climb in elevation the more prone you are to getting AMS. If you’re going to a high altitude location like Rocky Mountain National Park in Colorado, you’ll want to head up there slowly especially if you’ve never been above 4,000 feet elevation.
AMS generally sets in anywhere from one half to one day after arriving at a high altitude, so plan to spend at least a day in RV parks at lower elevations near your mountain destination, like Loveland Colorado, which is a much lower elevation and about an hour from the park entrance. Experts advise ascending about 1,000 feet a day to avoid AMS.
When you’re acclimating to a higher altitude, you’ll also want to:
- Drink lots of water to stay hydrated.
- Avoid strenuous exercise, smoking, and alcohol for at least the first couple of days.
- Consider taking ibuprophen. Two well-known studies indicate that ibuprophen can help when taking a 600 mg dose three times daily at least six hours before ascending. Asprin has also been proven to help, but ginkgo biloba, antioxidants, and Naproxen have been shown to be ineffective so it’s best to avoid them.
Next, watch for AMS symptoms.
Signs of mild AMS include headaches, loss of appetite, nausea, and insomnia. Typically these problems subside, but if they become severe you could be at at risk of life threatening cerebral or pulmonary edema. Signs of extreme AMS include:
- Mental confusion
- Balance and walking problems
- Extreme shortness of breath
- Coughing
- Gray/blue fingernails or lips
If you suspect extreme AMS, get off the mountain quickly and seek medical attention from a local health facility.
More altitude sickness tips from RVers:
iRV2 Forums: Altitude Sickness Problems

Often called “The O.G. of full-time RVing,” Rene Agredano and her husband Jim Nelson hit the road in a fifth wheel trailer in 2007, after their dog Jerry lost a leg to terminal cancer. Sixteen years later they are still traveling and sharing their nomadic adventures at LiveWorkDream. As a self-employed wordsmith, Rene shares her expertise for many RV industry videos, publications such as the Escapees RV Club Magazine, and has authored numerous books, including the Essential RVing Guide to National Parks, and Income Anywhere, a guide to earning money on the road. She has been featured in global media outlets including the PBS documentary “NATURE: Why We Love Cats and Dogs,” The Guardian Sunday Edition, and the Dan Pink book Free Agent Nation.
Very good information. I live in a suburb of Denver and need to heed this advic3!
Anyone consider the idea carrying an O2 tank in their RV for emergencies and/or to assist with the ascent?