Symptoms of Heat Loss and Hypothermia

According to the CDC, early signs and symptoms of heat loss include:

  • Shivering (first, most common symptom)
  • Fatigue
  • Loss of coordination
  • Confusion and disorientation

Late symptoms of heat loss include

  • No shivering
  • Blue skin
  • Dilated pupils
  • Slowed pulse and breathing
  • Loss of consciousness

If enough heat loss occurs, signs and symptoms of the resulting hypothermia include:

  • Cool skin
  • Slower, irregular breathing
  • Slower heartbeat
  • Weak pulse
  • Uncontrollable shivering
  • Severe shaking
  • Rigid muscles
  • Drowsiness
  • Exhaustion
  • Slurred speech
  • Memory lapses