Hypothermia happens when your body temperature falls below 95 degrees Fahrenheit or 35 degrees Centigrade. This can happen to an older person in a poorly heated house in the winter. It might take several hours or several days to develop. It can be a very dangerous condition, especially for older adults. As body temperature falls, all of the organs of the body are affected. This condition occurs more in men than women. The risk is higher if a person is malnourished, has just been in an accident of some kind, or has heart disease. Others at risk include people with liver problems and endocrine disorders. Being covered with cold water makes a person very vulnerable to hypothermia, whether by falling in water or getting covered with freezing rain. Hypothermia can also occur by being outside too long or without proper clothing in very cold weather.

Symptoms of mild hypothermia include:

• sluggishness,
• mild confusion,
• shivering, and
• loss of control of fine finger movements.

Symptoms of moderate hypothermia include:

• delirium,
• blue color of the fingers and toes,
• rigid muscles, and
• possible coma.

Symptoms of severe hypothermia include:

• very cold skin,
• pupils that don't change size in light or dark,
• no pulse felt, and
• no breathing.

Hypothermia is a serious medical condition. Call 911 for immediate assistance.

To avoid hypothermia, eat well and dress warmly. Dry off if you get wet. About a quarter of your body heat is lost from the head, so always wear hats and scarves when it is cold. Use gloves or mittens in the winter. Avoid alcohol before going out in the cold, because alcohol lowers the body's tolerance to cold.

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