When a doctor diagnoses an injured person as having a traumatic brain injury (TBI), it sounds pretty serious. The patient often receives more careful monitoring and follow-up than someone diagnosed with a concussion, but the two are essentially the same thing: a concussion is classified as a mild traumatic brain injury (mTBI).
Physicians have developed a growing alertness to a concussion's potentially lingering effects, including headaches, dizziness, balance problems, memory issues, concentration difficulties, hearing changes, and mood disorders like depression or anxiety. Still, those diagnosed with a concussion'particularly children and young athletes'often return to school, sports, or physical activities sooner than patients labeled with mTBI.
A 2010 study by McMaster University in Toronto found that in the days following a head injury diagnosis, children were about 1.5 times as likely to be discharged from the hospital if labeled with "concussion" compared to "mild TBI," and 2.5 times more likely to return to school and other activities early. Parents and others often did not consider a concussion to be a serious brain injury.
Medical researchers and organizations like the CDC, NIH, and Brain Injury Association of America emphasize that it is increasingly clear concussions are brain injuries. Current guidelines (including CDC's HEADS UP and recent consensus statements) define concussion as a type of mild TBI caused by a bump, blow, or jolt that disrupts normal brain function. Patients with repeated concussions'especially young athletes who return to contact sports before full recovery'face a high risk of negative long-term effects, such as prolonged symptoms, increased vulnerability to future injuries, neuron loss, inflammation, and potential links to conditions like chronic traumatic encephalopathy (CTE). Recent 2025 research highlights that repetitive head impacts in young contact-sport athletes can cause early, lasting brain changes'including neuron loss and vascular damage'even before CTE pathology appears.
