Symptoms of carbon monoxide poisoning and a key way to prevent it

Carbon monoxide poisoning can be very serious for those who inhale the gas as it can lead to death. There are some tell-tale signs and symptoms of carbon monoxide poisoning that you may want to know about. The signs and symptoms may not be clear and obvious, so it is important to know the symptoms.

Low Level Symptoms

Symptoms at this level can be very similar to common conditions such as flu or food poisoning. The important difference from flu and carbon monoxide posioning is that carbon monoxide poisoning does’nt result in a high temperature.
Common symptoms include:

  • headache
  • nausea (feeling sick) and vomiting
  • dizziness
  • tiredness and confusion
  • stomach pain
  • shortness of breath and difficulty breathing

Your symptoms may be less severe when you are away from the source of the carbon monoxide.

High level Symptoms

If you have breathed in high levels of carbon monoxide gas, it is likely that you will experience more severe symptoms. These may include:

  • impaired mental state and personality changes (intoxication)
  • vertigo – the feeling that you or the environment around you is spinning
  • ataxia – loss of physical co-ordination, caused by underlying damage to the brain and nervous system
  • breathlessness and tachycardia (a heart rate of more than 100 beats per minute)
  • chest pain caused by angina or a heart attack
  • seizures – an uncontrollable burst of electrical activity in the brain that causes muscle spasms
  • loss of consciousness – in cases where there are very high levels of carbon monoxide, death may occur within minutes.

At-risk groups

  • Certain people in your household may be affected by carbon monoxide poisoning more quickly than others. Those at particular risk include:
  • babies and young children
  • pregnant women
  • people with heart or breathing problem


One important way to to prevent against Carbon Monoxide Poisoning is by having your boiler serviced. Call 0203 103 0390 or click here to find out more.

Have your boiler serviced

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