Original question: "As a result of a blow or jolt to the head, have you ever had symptoms like headaches, sensitivity to light or noise, balance problems, or changes in mood and behavior?"
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Share of U.S. adults who had brain injury symptoms after a head injury as of 2025
A survey of U.S. adults from 2025 found that around 31 percent reported that as a result of a blow or jolt to the head, they had symptoms like headaches, sensitivity to light or noise, balance problems, or changes in mood and behavior. This means these individuals experienced symptoms of a brain injury after a head injury.
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Brain Injury Association of America. (March 5, 2025). Percentage of adults in the United States who had symptoms of a brain injury after a blow or jolt to the head as of 2025 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/1607424/brain-injury-symptoms-after-a-head-injury-us-adults/
Brain Injury Association of America. "Percentage of adults in the United States who had symptoms of a brain injury after a blow or jolt to the head as of 2025." Chart. March 5, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/1607424/brain-injury-symptoms-after-a-head-injury-us-adults/
Brain Injury Association of America. (2025). Percentage of adults in the United States who had symptoms of a brain injury after a blow or jolt to the head as of 2025. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/1607424/brain-injury-symptoms-after-a-head-injury-us-adults/
Brain Injury Association of America. "Percentage of Adults in The United States Who Had Symptoms of a Brain Injury after a Blow or Jolt to The Head as of 2025." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 5 Mar 2025, /statistics/1607424/brain-injury-symptoms-after-a-head-injury-us-adults/
Brain Injury Association of America, Percentage of adults in the United States who had symptoms of a brain injury after a blow or jolt to the head as of 2025 ÌÇÐÄÆƽâ°æ, /statistics/1607424/brain-injury-symptoms-after-a-head-injury-us-adults/ (last visited July 31, 2026)
Percentage of adults in the United States who had symptoms of a brain injury after a blow or jolt to the head as of 2025 [Graph], Brain Injury Association of America, March 5, 2025. [Online]. Available: /statistics/1607424/brain-injury-symptoms-after-a-head-injury-us-adults/
