Symptoms of Altitude Sickness

Recognizing the Symptoms of Altitude Sickness

Altitude sickness, also called acute mountain sickness (AMS), happens when your body struggles to adjust to lower oxygen levels at higher elevations. Knowing the signs early can help you take action before symptoms worsen. Your body needs rich oxygen levels  to perform its best. 

---

Early Symptoms (Can appear within hours of arrival at high altitude)

Headache – Often the first and most common sign.

Difficulty Sleeping – Restless nights or waking up frequently.

Fatigue or Weakness – Feeling unusually tired after light activity.

Loss of Appetite – Not feeling hungry or skipping meals.

Mild Nausea – A general uneasy stomach.

Dizziness or Lightheadedness – Especially when standing up quickly.

These early symptoms are your body’s warning signs. Taking steps now, such as using supplemental oxygen, can prevent them from getting worse.

---

When Symptoms Get Worse (If left untreated)

Persistent or Severe Headaches – Pain that doesn’t go away with rest or medication.

Severe Nausea or Vomiting – Can lead to dehydration and further strain on the body.

Shortness of Breath at Rest – Difficulty breathing even when not active.

Confusion or Difficulty Thinking Clearly – Trouble focusing or making decisions.

Loss of Coordination – Stumbling, unsteady walking, or trouble with balance.

These are signs that altitude sickness is advancing and can become dangerous. Severe cases can lead to High Altitude Pulmonary Edema (HAPE) or High Altitude Cerebral Edema (HACE) — both require immediate medical attention.

---

Tip: The faster you address symptoms, the sooner you can feel better and avoid serious complications. Supplemental oxygen is one of the fastest and most effective ways to relieve altitude sickness and help your body adjust.

Why Does Altitude Sickness Happen?

When you arrive at high altitude, your body needs time to adjust to the lower oxygen levels. Until it does, your muscles, brain, and organs receive less oxygen-rich blood, which can trigger the symptoms described above. This sudden change can catch even seasoned travelers off guard, making awareness and preparation key to enjoying your trip.

Altitude sickness doesn’t discriminate — it can affect anyone, regardless of age, fitness level, or experience at elevation. Even the healthiest athletes and frequent mountain visitors can develop symptoms if their bodies don’t have enough time to acclimate.

In Summit County, we are one of the highest counties in the world. 

• The Lowest Breckenridge sits at 9,600 feet, Many lifts go above 11,500ft
• The Lowest Keystone rests is at 9,280 feet, and Dercum towers above at 12,350ft.

Enjoy one of oxygen rich concentrators to battle our thin air. Prepare for the worse and feel your best. Its a secret up here. Ask any local.