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Cold and altitude

Cold and altitude: what the health services say, and where to stop reading.

The health services name three conditions linked to cold and height: hypothermia, frostbite and altitude sickness. Each needs medical care. This page names them as the health services describe them and gives no first aid or treatment.

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This page explains what governing bodies, standards bodies and safety bodies publish. It is not a substitute for lessons from a qualified instructor, avalanche training or medical advice.

These need medical care

Hypothermia, frostbite and altitude sickness need care from a qualified medical professional, and the NHS says hypothermia needs treating in hospital. This page names the conditions only. It contains no first aid, warming, descent or treatment steps.

Hypothermia

The NHS describes hypothermia as a dangerous drop in body temperature below 35C, against a normal temperature of around 37C, and says it needs to be treated in hospital (NHS page reviewed 9 June 2023).

The US Centers for Disease Control and Prevention publishes winter-weather pages on frostbite and hypothermia and, according to a search summary, gives 95F (35C) as the body temperature at which to get medical attention immediately. That page was not opened, so the CDC wording is unconfirmed here; the threshold matches the NHS figure.

Frostbite

The NHS says frostbite happens when skin freezes after time in very cold temperatures, and that it most often affects the fingers, toes, nose and ears. It tells people to get medical help if they think someone has frostbite, and notes that frostbite can come with hypothermia (NHS page reviewed 9 June 2025).

Altitude sickness

NHS 111 Wales says altitude sickness usually occurs above 2,500 metres, and that it can sometimes be life-threatening and need treatment. A peer-reviewed meta-analysis, seen only as a search-result excerpt and so unconfirmed here, describes acute mountain sickness as caused by acute hypoxia after ascending above 2,500 metres in a short time.

Whether any given ski area reaches that height is a matter of its own published elevations, which this site does not list.

Heart attacks in the ski-area counts

Three of the 13 deaths recorded on Colorado ski slopes in 2025-26 were heart attacks, according to the Colorado Sun's survey of county coroners (11 May 2026). The National Ski Areas Association does not count medical events in its national tally of ski-area deaths, so heart attacks appear in the Colorado coroner count but not in NSAA's. The difference is explained on deaths at ski areas.

What the competition rules say about cold-weather kit

Competition rules name some items that bear on cold. They are rules for racers at those events, with no claim that any item prevents a cold injury.

Body and documentDisciplineRule
FIS, alpine equipment specifications 2026/27, section 3.8Alpine skiingGloves are "urgently recommended", may not reach past the elbow and may not be coated or reshaped for aerodynamics
FIS, snowboard, freestyle, freeski and ski cross specifications 2026/27Freestyle and ski cross; snowboardGloves strongly recommended in freestyle and ski cross; snowboarders may wear nothing on their hands except gloves (C.5)
FIS, cross-country, ski jumping and Nordic combined specifications 2026/27, C.12 (read from a marked-up copy: needs confirming against a clean copy)Ski jumpingGloves compulsory; the sleeve may not be fixed around the glove
ISMF Rules and Guidelines 2025-26, compulsory equipment table and 31.1Ski mountaineering racesA long-sleeved suit or layer to the wrist is compulsory, with optional base and windbreaker layers as the Technical Jury decides; gloves are on the compulsory list for team and individual races; a survival blanket of at least 1.80 square metres where the table requires it

Ski mountaineering races are governed by the International Ski Mountaineering Federation (ISMF), not FIS, and the rules of one discipline do not apply to another. Clothing in general is on clothing named.

What this page leaves out

No figures for cold injuries or altitude sickness among skiers were found in the research, and no ski-specific guidance from a medical body. Signs, symptoms and what to do are matters for a doctor or the emergency services, and are not described here.

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