What is a common symptom of carbon monoxide poisoning?

A common symptom of carbon monoxide poisoning is the presence of cherry red lips and nails. This characteristic occurs because carbon monoxide binds to hemoglobin in the blood much more tightly than oxygen does, which can lead to a specific coloration due to the formation of carboxyhemoglobin. The body’s inability to effectively transport oxygen can cause a variety of symptoms, but the distinctive cherry red coloration is particularly indicative of carbon monoxide exposure.

While nausea and vomiting, severe headache, and persistent cough can occur with other conditions or even with carbon monoxide poisoning in some cases, they are not as definitive in identifying carbon monoxide exposure. Cherry red lips and nails provide a clearer, visual marker that medical professionals can use to assess potential carbon monoxide poisoning quickly.