Symptoms

Shivering is likely the first thing you'll notice as the temperature starts to drop because it's your body's automatic defense against cold temperature — an attempt to warm itself.

Signs and symptoms of hypothermia include:

• Shivering
• Slurred speech or mumbling
• Slow, shallow breathing
• Weak pulse
• Clumsiness or lack of coordination
• Drowsiness or very low energy
• Confusion or memory loss
• Loss of consciousness
• Bright red, cold skin (in infants)

Someone with hypothermia usually isn't aware of his or her condition because the symptoms often begin gradually. Also, the confused thinking associated with hypothermia prevents self-awareness. The confused thinking can also lead to risk-taking behavior.

When to see a doctor

Call 911 or your local emergency number if you suspect someone has hypothermia.

While you wait for emergency help to arrive, gently move the person inside if possible. Jarring movements can trigger dangerous irregular heartbeats. Carefully remove his or her wet clothing, replacing it with warm, dry coats or blankets.