How Does Trauma Contribute to Acquired Neurodiversity, and What Are Its Lasting Effects?

How does trauma contribute to acquired neurodiversity, and what are its lasting effects?

One important concept within neurodiversity is acquired neurodiversity, which refers to changes in the brain resulting from life experiences, particularly trauma. Research indicates that approximately 70% of Americans have experienced some form of trauma, which can leave lasting effects on the brain. A commonly recognized example is post-traumatic stress disorder (PTSD), often associated with combat veterans. However, trauma affects people in many other ways and can stem from everyday experiences such as accidents, abuse, or even chronic stress.

Trauma does not just affect conscious memories—it can also leave subconscious imprints. For example, I once worked with a client who had a debilitating fear of dogs. When I asked if she had ever been bitten or chased, she could not recall any such incident. However, after speaking with her family, she discovered she had been bitten on the foot at eight months old. She had no memory of the event, but her body retained the fear. This demonstrates how trauma, even when not consciously remembered, can shape our behaviors and responses.