What are the symptoms of carbon monoxide poisoning?

Unfortunately, carbon monoxide poisoning symptoms are often overlooked because they’re similar to the flu. Here are several of the symptoms to watch for.

Lower exposure:

  • Headaches
  • Fatigue
  • Nausea

Higher exposure:

  • Severe throbbing headache
  • Drowsiness
  • Disorientation
  • Confusion
  • Accelerated heart rate

The highest exposure:

  • Unconsciousness
  • Convulsions
  • Cardiorespiratory failure
  • Coma
  • Death