---
title: "HACE on the Everest Base Camp Trek: Confusion,…"
description: "Recognize suspected high-altitude cerebral edema on the Everest Base Camp trek, stop ascent, protect the traveller, arrange descent and contact professional…"
canonical: "https://www.nepaltibetbhutan.com/everest-base-camp/everest-base-camp-hace"
last-updated: "2026-08-21T00:00:00+05:45"
image: "https://www.nepaltibetbhutan.com/_next/static/images/everest-base-camp-hero-1280.webp"
---

Safety hub

# HACE on the Everest Base Camp Trek: Confusion, Coordination and Emergency Descent

Suspected HACE is a high-altitude emergency. Confusion, unusual behavior, severe drowsiness, poor coordination, inability to walk normally or a seizure require immediate help, no further ascent, urgent descent and professional medical care.

**Emergency**Act immediately

**Confusion**Key warning

**Descent**Definitive response

**Guide**Coordinate help

DB
**By [Dinesh Bhusal](/author-dinesh-bhusal)**7 min read

**✓ Editorial review**

Information checked against current official and local sources. Fees, access, permits and transport can change.
[Sources & methodology →](/data-methodology)

On this page

Safety decision aid

## Stop, descend and seek help when symptoms worsen

Online guidance cannot diagnose illness. Tell your guide early and seek professional medical advice whenever symptoms are concerning.

**1 · Monitor**Mild headache or appetite change: rest, hydrate and report it.

**2 · Do not ascend**Persistent headache, nausea, dizziness or unusual fatigue means no higher sleeping altitude.

**3 · Descend / evacuate**Confusion, loss of coordination, breathlessness at rest or a cough with frothy sputum are emergencies.

- **Stop**Pause the ascent and assess with your guide.

- **Descend**Go lower if symptoms do not settle or are severe.

- **Evacuate**Use medical care, rescue coordination and insurance support when needed.

## Recognize a change in the brain

HACE can develop as severe altitude illness worsens. The traveller may appear confused or intoxicated, behave unusually, stumble, fail a simple coordination task, become difficult to wake or have a seizure. You do not need to wait for every symptom or for a severe headache before acting.

Local Planning Note · Amigo Treks Team
**Field advice**

This page supports recognition and emergency planning. It does not diagnose HACE or replace a clinician.

## What the group should do now

Swipe to view table →

| Action | Purpose | Do not |
| --- | --- | --- |
| Stop ascent | Prevent further exposure while help is arranged | Keep walking to protect the itinerary |
| Stay with the person | Prevent a fall, separation or unattended deterioration | Send the person ahead alone |
| Arrange urgent descent | Move toward lower altitude and medical care | Wait for a convenient morning |
| Contact guide, operator and insurer | Coordinate local transport and professional support | Assume a phone signal or helicopter is guaranteed |

## Keep the person warm and supervised

- Protect from cold, wind, falls and traffic while the guide arranges help.

- Do not give alcohol or sedating medicines.

- Use oxygen or prescribed emergency treatment only within the operator's and clinician's plan.

- Record the time, symptoms, altitude and medicine already taken for the medical team.

- Keep the group informed without leaving the ill traveller unsupported.

## Descent takes priority over Base Camp

A person with suspected HACE should not continue toward Base Camp, Kala Patthar or a pass to meet a fixed objective. The guide may need to arrange a porter, vehicle, horse, oxygen, clinic or evacuation according to the location and conditions. Descent is the urgent treatment direction; transport availability still needs local coordination.

## Write the emergency chain before the trek

- Name who recognizes symptoms and who makes the stop or descent call.

- Record guide, agency, insurer, clinic and emergency contacts offline.

- Confirm the closest realistic descent route from each high overnight.

- Check evacuation limits, authorisation steps, exclusions and payment responsibility.

- Brief every traveller that reporting symptoms early protects the group.

## After the event

Do not return to altitude because symptoms improved at a single lower stop. A clinician should assess the traveller and advise on further travel, medication, flight and any return to the trek. Report the event accurately to the operator and insurer.

Important planning links

## Build the complete trek plan

[Compare the full itinerary→](/everest-base-camp/everest-base-camp-trek-itinerary)[Read altitude guidance→](/everest-base-camp/everest-base-camp-altitude-sickness)[Check the packing list→](/everest-base-camp/everest-base-camp-trek-packing-list)[Check high-altitude insurance→](/everest-base-camp/everest-base-camp-trek-insurance)

**Medical disclaimer**
This page is general travel-health education, not a diagnosis or personal treatment plan. Consult an appropriate clinician before high-altitude travel. If serious symptoms are suspected, stop ascending and seek urgent help; descent and professional care should not be delayed.

Useful answers

## Frequently asked questions

What are the warning signs of HACE?+
Confusion, unusual behavior, poor coordination, stumbling, severe drowsiness, reduced responsiveness or seizure at altitude are urgent warning signs.
Can someone with suspected HACE sleep it off?+
No. Reduced responsiveness may signal deterioration. Stay with the person, stop ascent, arrange urgent descent and obtain professional care.
Should I wait for a headache before acting?+
No. Neurological change and poor coordination matter even when a headache is absent or not severe. Act on the change you can see.
Can oxygen replace descent?+
Oxygen may support an emergency plan under professional direction, but it does not replace descent and medical assessment.
Who should make the descent decision?+
The guide and medical professionals should coordinate the decision, with the traveller's welfare ahead of a schedule, group pressure or destination goal.

## Sources & methodology

Changing prices, fees, aviation arrangements, local procedures, weather and lodge availability should be reconfirmed before travel. Altitudes, distances and walking times are approximate planning values.

[**Himalayan Rescue Association Nepal** — Altitude illness education ↗](https://www.himalayanrescue.org/)
Supports: high-altitude illness prevention, recognition and descent-oriented safety guidance. Period: current guidance. Accessed: August 7, 2026.

[**CDC Yellow Book** — High-altitude travel and altitude illness ↗](https://www.cdc.gov/yellow-book/hcp/environmental-hazards-risks/high-altitude-travel-and-altitude-illness.html)
Supports: acclimatization principles and emergency altitude-illness context. Period: current travel-health guidance. Accessed: August 7, 2026.

Continue planning

## Related Everest guides

[Safety hub
### Diamox guide

Read the Diamox guide guide →](/everest-base-camp/everest-base-camp-diamox-guide)[Safety hub
### Oxygen saturation

Read the Oxygen saturation guide →](/everest-base-camp/everest-base-camp-oxygen-saturation)[Safety hub
### HAPE guide

Read the HAPE guide guide →](/everest-base-camp/everest-base-camp-hape)

Personalised planning

## Want to plan your acclimatization safely?

For HACE guide, tell our Nepal-based trekking team your dates, group size and preferred comfort level. We will suggest a realistic route without rushing acclimatization.

[Plan with Amigo Treks ↗](https://www.amigotrekking.com/everest-base-camp-trek.html)[Ask on WhatsApp](https://wa.me/9779851136878?text=Hello%20Amigo%20Treks%2C%20I%20need%20help%20planning%20an%20Everest%20Base%20Camp%20trek.)

Plan with context

## Custom Himalayan Route Planning

Our Kathmandu operations team arranges itemised itineraries, verified permits, and private transport matched to your travel dates and pacing.
[Request custom itinerary →](/contact#planning-enquiry)[WhatsApp a trip planner ↗](https://wa.me/9779851136878?text=Hello%20Amigo%20Treks%2C%20I%20need%20help%20planning%20HACE%20guide.)[← Complete EBC guide](/everest-base-camp)

Talk through the next decision

## Ask a trip planner about HACE guide.

Share your name, contact details and one short question. The planning team will use the page context to start in the right place.

Your request goes directly to [Amigo Treks & Expedition](https://www.amigotrekking.com/), our Kathmandu-based trekking and tour team.

The submission includes technical attribution such as IP-derived location, device type and pages visited before sending. See the Privacy Policy. [Read the Privacy Policy.](/privacy-policy)

- Route and pace fit for your dates

- Practical trade-offs and fallback options

- A reply from the local planning team

Usually replied to within 1 business day. This is not an emergency channel or medical assessment.

**Send a short planning request**Name and a short message are required. Add an email or phone number so we know where to reply.

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Short message *At least 10 characters. Do not send passport, payment or medical documents.
I agree that Amigo Treks & Expedition may use my message and related technical attribution to reply to my request. [Read the Privacy Policy.](/privacy-policy) *
The submission includes technical attribution such as IP-derived location, device type and pages visited before sending.

Community Insights

## Route Experiences & Field Updates

Recent field reports, route conditions, and practical observations shared by travellers and local leaders.

[Explore Community Discussions](https://www.nepaltibetbhutan.com/everest-base-camp/everest-base-camp-hace#discussion)[Sign in](https://www.nepaltibetbhutan.com/login?redirect=%2Feverest-base-camp%2Feverest-base-camp-hace%23discussion)[Create an account](https://www.nepaltibetbhutan.com/register?redirect=%2Feverest-base-camp%2Feverest-base-camp-hace%23discussion)

Verified accounts share firsthand field notes; new submissions are moderated for accuracy.

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