(HealthDay News) — Traumatic brain injury, most often a concussion, is caused by a sharp and sudden blow to the head. It may be stem from a car accident, football tackle or an unfortunate fall.
If you suspect a TBI, you should seek immediate medical attention, the U.S. Food and Drug Administration says. A doctor may conduct a neurological exam to evaluate thinking, movement, sensory function, coordination and reflexes.
The FDA says typical symptoms of a mild TBI include:
- Headache.
 - Confusion.
 - Blurred vision.
 - Behavior changes.
 
The agency says these additional symptoms indicate a more serious brain injury:
- Nausea or vomiting.
 - Slurred speech.
 - Weakness in the arms or legs.
 - Problems with thinking.
 
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