Which symptom is commonly associated with carbon monoxide poisoning?

Which symptom is commonly associated with carbon monoxide poisoning?

• A. Headache — rapid onset
• B. Nausea / vomiting
• C. Dyspnea, tachypnea
• D. Flushed skin

Answer: (D)

Carbon monoxide poisoning most reliably presents with a headache. This happens because CO binds strongly to hemoglobin, preventing oxygen from getting to the brain and other tissues, so brain hypoxia triggers that sense of pressure or throbbing in the head. Nausea, vomiting, dizziness, and fatigue are also common as the body's tissues struggle with reduced oxygen delivery. Shortness of breath can occur, especially in people with underlying heart or lung conditions. Flushed or cherry-red skin is often described in textbooks, but it isn’t a dependable sign. Many patients with CO poisoning have normal skin color, and the absence of flushing does not rule it out. So while headache is the most frequently reported symptom, always consider CO exposure in the right context (enclosed spaces, fuel-burning appliances, fires) and treat with rapid removal from the source and high-flow oxygen.

Carbon monoxide poisoning most reliably presents with a headache. This happens because CO binds strongly to hemoglobin, preventing oxygen from getting to the brain and other tissues, so brain hypoxia triggers that sense of pressure or throbbing in the head. Nausea, vomiting, dizziness, and fatigue are also common as the body's tissues struggle with reduced oxygen delivery. Shortness of breath can occur, especially in people with underlying heart or lung conditions.

Flushed or cherry-red skin is often described in textbooks, but it isn’t a dependable sign. Many patients with CO poisoning have normal skin color, and the absence of flushing does not rule it out. So while headache is the most frequently reported symptom, always consider CO exposure in the right context (enclosed spaces, fuel-burning appliances, fires) and treat with rapid removal from the source and high-flow oxygen.