Which of the following is a sign of a concussion?

A concussion is a type of traumatic brain injury that can result from a blow or jolt to the head. One common sign of a concussion is a severe headache. This headache may develop shortly after the injury and can vary in intensity.

In addition to a severe headache, concussions can produce a range of other symptoms, including confusion, dizziness, and balance problems. While nausea and vomiting are also possible symptoms, the direct correlation of a severe headache as a primary and frequently observed sign of concussion makes it a pivotal indicator in understanding this type of injury.

Other options, such as bleeding from the nose or a stomach ache, are not typical signs associated with a concussion. Bleeding from the nose may indicate other types of injuries, particularly to the facial area, while a stomach ache does not relate directly to brain trauma. Therefore, recognizing a severe headache is essential in diagnosing a concussion and initiating further assessment and care.