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News
Emergency departments are missing more than half of mild traumatic brain injury (mTBI) cases, a new study finds. Despite 41% of closed head injury patients meeting diagnostic criteria, only 21% were actually diagnosed or suspected of having mTBI. Middle-aged adults (40–64 years) faced the highest rate of missed diagnoses, raising concerns about gaps in follow-up care.
Emergency rooms are falling short when it comes to catching mild traumatic brain injuries (mTBI). A retrospective study of 314 adults treated across 18 U.S. emergency departments found that while 41% of patients with closed head injuries met the 2023 American Congress of Rehabilitation Medicine (ACRM) diagnostic criteria for mTBI, only 21% were actually diagnosed or clinically suspected of having the condition — a false-negative rate of 55%.
The diagnostic gap was especially pronounced among middle-aged adults (ages 40–64), who had the highest rate of missed diagnoses at 34% — significantly higher than other age groups. Younger adults (18–39) were most frequently diagnosed in the ED, while older adults (65+) fell somewhere in between. Compounding the problem: only a minority of patients had documented outpatient follow-up within 40 days of discharge.
By the Numbers:
Why it matters: Missing an mTBI diagnosis doesn't just mean a missed label — it means patients may not receive the follow-up care critical for recovery. Greater awareness of standardized diagnostic criteria among ED physicians could meaningfully improve outcomes for a commonly overlooked injury.
