Which is a sign of concussion in adults?

• A. Confusion
• B. Fever
• C. Shortness of Breath
• D. Nausea Without Vomiting

Answer: (A)

Concussion involves a mild traumatic brain injury that disrupts brain function, so signs often include changes in mental status after a head impact. Confusion directly reflects altered brain function and is a hallmark sign you’d expect after a head injury, making it the best indicator among the options. Fever suggests infection, not brain injury. Shortness of breath points to respiratory or chest issues rather than concussion. Nausea can occur after a head impact but, without vomiting, is less specific to concussion than confusion. If confusion or other symptoms persist or worsen, seek medical evaluation promptly.