Which of the following is the mildest consequence of traumatic brain injury?

• A. Concussion
• B. Persistent vegetative state
• C. Coma
• D. Severe amnesia

Answer: (A)

Verified step by step guidance

1. Step 1: Understand the term 'traumatic brain injury' (TBI), which refers to brain dysfunction caused by an external force, such as a blow to the head.
2. Step 2: Review the severity levels of TBI consequences, ranging from mild to severe. Mild consequences typically involve temporary symptoms, while severe consequences involve long-term or permanent impairments.
3. Step 3: Define each option: 'Concussion' is a mild TBI causing temporary brain function disruption; 'Coma' is a state of prolonged unconsciousness; 'Persistent vegetative state' is a condition of wakefulness without awareness; 'Severe amnesia' involves significant memory loss.
4. Step 4: Compare these definitions to identify which condition represents the mildest form of brain injury, focusing on the degree of impairment and recovery potential.
5. Step 5: Conclude that 'Concussion' is the mildest consequence because it usually involves temporary symptoms and a good chance of recovery, unlike the other more severe and long-lasting conditions.