Which condition is described as a mild traumatic brain injury?

• A. Contusion
• B. Concussion
• C. Hypoglycemia
• D. Hyperglycemia

Answer: (B)

Concussion is the mild traumatic brain injury. It happens after a head impact that temporarily disrupts normal brain function without causing a major structural brain injury visible on routine imaging. It’s considered mild because most symptoms and mental status changes resolve within days to weeks, even though recovery can vary. Clinically, you see confusion, amnesia surrounding the event, dizziness, headache, and sometimes a brief loss of consciousness. In contrast, a contusion involves bruising of brain tissue and often presents with focal neurologic signs and detectable injury on imaging, indicating a more significant injury. Metabolic problems like hypoglycemia and hyperglycemia affect brain function due to energy supply issues, not trauma to brain tissue, so they aren’t traumatic brain injuries.