Main AHCA Website

AHCA’s main website for information on Medicaid, Health Quality Assurance and the Florida Center for Health Information and Policy Analysis.

Go >

Florida Health Information Network

This website provides information and resources relating to AHCA’s initiatives for Health Information Technology and Health Information Exchange.

Go >


FloridaHealthFinder.gov

Provides health education and information to compare and locate health care providers in Florida to make well-informed health care decisions.

Go >
AHCA Network of Websites

Health Education


Health Encyclopedia

Search the Health Encyclopedia

Hypothermia

Definition

Hypothermia is dangerously low body temperature, below 95°F (35°C).

Alternative Names

Low body temperature; Cold exposure

Considerations

Other types of cold injuries that affect the limbs are called peripheral cold injuries. Of these, frostbite is the most common freezing injury. Non-freezing injuries that occur from exposure to cold wet conditions include trench foot and immersion foot conditions. Chilblains are a type of nonfreezing injury that develops in cold, dry conditions.

You are more likely to develop hypothermia if you are:

  • Very old or very young
  • Chronically ill, especially persons who have heart or blood flow problems
  • Malnourished
  • Overly tired
  • Taking certain prescription medicines
  • Under the influence of alcohol or drugs

Causes

Hypothermia occurs when more heat is lost than the body can make. In most cases, it occurs after long periods in the cold.

Common causes include:

  • Being outside without enough protective clothing in winter
  • Falling into cold water of a lake, river, or other body of water
  • Wearing wet clothing in windy or cold weather
  • Heavy exertion, not drinking enough fluids, or not eating enough in cold weather

Symptoms

As a person develops hypothermia, they slowly lose the ability to think and move. In fact, they may even be unaware that they need emergency treatment. Someone with hypothermia also is likely to have frostbite.

The symptoms include:

  • Drowsiness
  • Weakness and loss of coordination
  • Pale and cold skin
  • Confusion
  • Uncontrollable shivering (although at extremely low body temperatures, shivering may stop)
  • Slowed breathing or heart rate

Lethargy, cardiac arrest, shock, and coma can set in without prompt treatment. Hypothermia can be fatal.

First Aid

Take the following steps if you think someone has hypothermia:

  1. If the person has any symptoms of hypothermia are present, especially confusion or problems thinking, call 911 right away.
  2. If the person is unconscious, check airway, breathing, and circulation. If necessary, begin rescue breathing or CPR. If the victim is breathing fewer than 6 breaths per minute, begin rescue breathing.
  3. Take the person inside to room temperature and cover with warm blankets. If going indoors is not possible, get the person out of the wind and use a blanket to provide insulation from the cold ground. Cover the person's head and neck to help retain body heat.
  4. Once inside, remove any wet or tight clothes and replace them with dry clothing.
  5. Warm the person. If necessary, use your own body heat to aid the warming. Apply warm compresses to the neck, chest wall, and groin. If the person is alert and can easily swallow, give warm, sweetened, nonalcoholic fluids to aid the warming.
  6. Stay with the person until medical help arrives.

Do Not

  • Do NOT assume that someone found lying motionless in the cold is already dead.
  • Do NOT use direct heat (such as hot water, a heating pad, or a heat lamp) to warm the person.
  • Do NOT give the person alcohol!

When to Contact a Medical Professional

Call 911 anytime you suspect someone has hypothermia. Give first aid while awaiting emergency help.

Prevention

Before you spend time outside in the cold, do NOT drink alcohol or smoke. Drink plenty of fluids and get enough food and rest.

Wear proper clothing in cold temperatures to protect your body. These include:

  • Mittens (not gloves)
  • Wind-proof, water-resistant, many-layered clothing
  • Two pairs of socks (avoid cotton)
  • Scarf and hat that cover the ears (to avoid major heat loss through the top of your head)

Avoid:

  • Extremely cold temperature, especially with high winds
  • Wet clothes
  • Poor circulation, which is more likely from age, tight clothing or boots, cramped positions, fatigue, certain medications, smoking, and alcohol

References

Winkenwerder W, Sawka MN. Disorders due to heat and cold. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 24th ed. Philadelphia, PA: Elsevier Saunders; 2011:chap 109.

Zafren K, Danzl DF. Frostbite. In: Marx JA, Hockberger RS, Walls RM, et al, eds. Rosen's Emergency Medicine: Concepts and Clinical Practice. 8th ed. Philadelphia, PA: Elsevier Mosby; 2013:chap 139.

Review Date:1/13/2014
Reviewed By:Jacob L. Heller, MD, MHA, Emergency Medicine, Virginia Mason Medical Center, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997-A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

adam.com

The Agency for Health Care Administration (Agency) and this website do not claim the information on, or referred to by, this site is error free. This site may include links to websites of other government agencies or private groups. Our Agency and this website do not control such sites and are not responsible for their content. Reference to or links to any other group, product, service, or information does not mean our Agency or this website approves of that group, product, service, or information.

Additionally, while health information provided through this website may be a valuable resource for the public, it is not designed to offer medical advice. Talk with your doctor about medical care questions you may have.

Health
Outcome Data

No data available for this condition/procedure.

Health Encyclopedia

More Features

We Appreciate Your Feedback
1. Did you find this information useful?
         Yes
         No

2. Would you recommend this website to family and friends?
         Yes
         No