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Primitive reflexes (PRs) are involuntary motor responses that form early in development to stabilize the body and ensure survival. When these reflexes fail to integrate or are reactivated due to trauma, emotional stress, or neurogenic disease, they cause dysfunction in the body’s musculoskeletal and nervous systems.
In clinical settings, retained PRs do not present abstractly. They express through specific, reproducible fascial bracing patterns, muscle spasticity, and sinew channel fixation. These patterns impair functional mobility, destabilize postural tone, and often correlate with elevated sympathetic drive, reduced vagal tone, and impaired cranial nerve regulation.