Brain injury can be a devastating event, leading to physical, emotional, and cognitive challenges. Some synonyms for brain injury include acquired brain injury (ABI), traumatic brain injury (TBI), closed head injury (CHI), and concussion. ABI refers to any brain injury that occurs after birth, such as stroke, tumor, and infection. TBI specifically involves a blow or jolt to the head, resulting in damage to the brain. CHI is another term for TBI, indicating that the injury occurred without any penetration or open wound. Concussion is a mild form of TBI, often resulting from sports-related or other types of impact. Understanding various synonyms for brain injury can help individuals and their loved ones access the appropriate care and support.