What symptom may suggest the presence of a concussion in an adult?

Sensitivity to light and noise is a common symptom associated with concussions in adults. This phenomenon occurs due to the brain's altered processing capabilities following a head injury. When an individual sustains a concussion, it can result in disturbances to normal sensory perception. Therefore, experiencing heightened sensitivity to environmental stimuli like bright lights or loud sounds can indicate that the brain is struggling to function properly, which is characteristic of a concussion.

In contrast, options such as increased appetite, improved memory retention, and a stable emotional state are not typical indicators of a concussion. After experiencing a concussion, individuals frequently report changes in appetite, potential memory issues, and emotional instability, such as mood swings or irritability. Thus, these alternatives do not reflect the common symptoms associated with this type of brain injury.