Which of the following is one of the early symptoms of carbon monoxide poisoning?

One of the early symptoms of carbon monoxide poisoning is a headache. This occurs because carbon monoxide binds to hemoglobin in the blood more efficiently than oxygen, reducing the amount of oxygen transported throughout the body. This lack of oxygen can lead to various symptoms, the most common being a headache, which might be mistaken for a simple tension headache or due to another cause. Identifying headaches as a symptom is crucial because it can allow for early detection of carbon monoxide exposure, prompting the need to seek fresh air and medical attention if necessary. Other symptoms, such as chest pain and nausea, are often associated with more severe poisoning and may not present until later in the exposure. Dizziness can also occur but is typically less indicative of the early stages compared to a headache. Recognizing these early signs can be vital in preventing serious health complications.