Which of the following is not a recognized symptom of a concussion?

A bloody nose is not recognized as a symptom of a concussion. Concussions are mild traumatic brain injuries that can result from a blow to the head or a sudden jolt that causes the brain to move rapidly within the skull. The common symptoms of a concussion include headaches, dizziness, confusion, nausea, and balance issues. While a bloody nose can occur due to facial trauma or injury, it is not part of the symptomatology associated with a concussion itself. Recognizing the symptoms is crucial for proper assessment and management of a concussion to ensure the safety and health of the athlete.