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Hypothermia
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Symptoms

Hypothermia

Hypothermia is an abnormally low body temperature caused when the body loses heat faster than it can produce it.

Understanding Hypothermia

Hypothermia is a medical emergency defined by a body temperature below 95 °F (35 °C). It can lead to death if not treated promptly. Because the condition develops gradually and affects your thinking, you may not realize you need help, making it especially dangerous.

Symptoms

Hypothermia can cause a person to become:

  • Sleepy
  • Confused
  • Clumsy

Risk Factors

Anyone spending significant time outdoors in cold weather is at risk. Other contributing factors include being cold and wet, or remaining under cold water for too long. Certain groups are especially vulnerable:

  • Babies: Can develop hypothermia from sleeping in a cold room.
  • Older adults: Are at an increased risk.

Frequently Asked Questions

ging reduces the body’s ability to generate heat, impairs shivering, and often involves medications that affect circulation. Seniors should wear layered, moisture‑wicking clothing, stay active, keep indoor heating at a safe level, check that footwear isn’t damp, and have regular checks on body temperature during cold weather outings.
Look for shivering that becomes uncontrollable, cold and pale skin, numbness in extremities, slurred speech, clumsiness, and a feeling of extreme fatigue or confusion; these often appear when core temperature falls below 95 °F (35 °C).
Move the person to a warm, dry environment, remove wet clothing, cover them with dry blankets (including head and neck), provide warm (non‑alcoholic) beverages if they are conscious, and use body heat (e.g., skin‑to‑skin contact) if no blankets are available; avoid rapid rewarming like hot water baths.
Keep the baby’s room at 68‑72 °F (20‑22 °C), dress them in layers with a snug hat, use a sleep sack instead of loose blankets, and avoid placing the crib near drafts or windows; monitor the infant’s skin temperature (it should feel warm, not cool to the touch).
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

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