Overview
Hypothermia can happen in cool, wet weather, not just freezing cold.
Older adults can develop it indoors in cold homes.
Symptoms
Common signs:
- Confusion
- Slurred speech
- Shivering stops
Less common
- Sleepiness
Look up a symptom: Always feeling cold · New confusion or not acting like themselves · Shaking or tremor
When to get medical care
Causes
Cold.
Does it spread or run in families?
- It isn't contagious. You can't catch it from someone else.
Who is more likely to get it
- Older adults
- Alcohol use
Possible complications
- Heart rhythm problem (arrhythmia): A very cold heart can stop
- Frostbite: Often happens along with it
Diagnosis
This is diagnosed in the emergency room or hospital.
The exam
A physical exam.
Tests
Tests, if needed:
- Temperature:
Treatment
Emergency care is needed. While waiting for help:
Self-care
- Call 911
- Remove wet clothes
- Warm blankets
Which doctor treats this
- Emergency doctors treat it first, in the ER.
Back to school, work, or sports
- Recovery time varies. Ask your care team when you can drive, lift, work, and exercise.
Children, pregnancy, and older adults
- Older adults and babies: Highest risk.
Pregnancy and breastfeeding
- If you're pregnant or planning to be, tell your prenatal provider about this condition.
- Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
- Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
- Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.
For caregivers
- Go to visits when you can and take notes.
- Keep a list of medicines, allergies, and doctors in one place.
- Learn the warning signs that need fast care.
- Learn CPR. Many hospitals and the Red Cross offer classes.
- Take breaks and ask for help. Caregivers need care too.
Outlook
Most recover with warming.
Getting ready for your visit
Bring a list of your symptoms and medicines.
What to bring
- A list of your medicines and supplements
- Notes on when symptoms started and what makes them better or worse
Questions to ask
- What follow-up care do I need?
- How can I prevent this from happening again?
Research studies
Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.
Search ClinicalTrials.gov for studies on Hypothermia (low body temperature)
Sources
Last updated 2026-11-12.