Undiagnosed TBI: Why Brain Injuries Are Often Missed and Misunderstood

Traumatic brain injuries are incredibly common, yet many mild TBIs and concussions go unrecognized. And when the symptoms of a brain injury overlap with the effects of complex trauma, it can become difficult to understand what is actually driving changes in cognition, emotional regulation, behavior, energy, and capacity.

In this episode of Trauma Rewired, Jennifer Wallace and Elisabeth Kristof are joined by Amanda Smith, certified brain injury specialist, applied neurology pain and performance coach, NSI educator, and founder of Amanda's Way, to explore the intersection of traumatic brain injury and complex trauma.

Amanda shares her own experience recovering from concussion and whiplash and explains why symptoms such as brain fog, fatigue, irritability, emotional reactivity, poor concentration, sleep disruption, sensory sensitivity, and reduced capacity can easily be attributed to trauma, anxiety, depression, or stress when an underlying brain injury may also be contributing.

Together, they explore how TBI can change the brain's ability to process visual, vestibular, sensory, and cognitive information; why everyday inputs can require significantly more resources after injury; and how reduced fuel and capacity can affect everything from relationships and work to emotional regulation and rehabilitation.

The conversation also examines why practitioners working with trauma and the nervous system need a foundational understanding of concussion and TBI—and why those working with brain injury populations benefit from understanding the effects of complex trauma, chronic stress, and nervous system patterns.

Rather than pushing through symptoms, recovery begins with understanding what the nervous system is actually experiencing, assessing capacity, working with the minimum effective dose, and recognizing when additional rehabilitation, referral, or collaborative care may be needed.

In This Episode What traumatic brain injury and mild TBI can look like

Why many concussions and mild TBIs go undiagnosed

The overlap between TBI, anxiety, depression, PTSD, and complex trauma symptoms

How brain injury can affect emotional regulation, cognition, memory, vision, and behavior

Why irritability, withdrawal, overwhelm, and reduced capacity may emerge after concussion

The relationship between complex trauma and persistent post-concussion symptoms