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Isolated post-traumatic astereognosis: a case-based review
Yahya H Khormi1,2, Mostafa M E Atteya3,4
1Division of Neurosurgery, Department of Surgery, Faculty of Medicine, Jazan University, Jazan, Saudi Arabia.
Summary
Astereognosis, the inability to identify objects by touch, can rarely occur after head trauma. This case highlights a 17-year-old with isolated astereognosis following blunt head injury, emphasizing the need for careful neurological assessment.
Area of Science:
- Neuroscience
- Neurology
- Trauma Surgery
Background:
- Astereognosis is the tactile inability to recognize objects by touch, typically associated with the contralateral sensory cerebral cortex.
- Previous reports linking astereognosis to trauma are rare, with only two documented cases involving extradural hematoma evacuation and neck bullet injury.
Observation:
- A 17-year-old male presented with isolated left hand astereognosis after blunt head trauma.
- Imaging revealed a non-hemorrhagic contusion of the right post-central gyrus.
Findings:
- Post-traumatic isolated astereognosis is a rare and likely underreported consequence of traumatic brain injury.
- This case represents the second report of astereognosis following head trauma and the third following any trauma.
Implications:
- Neurosurgeons should be vigilant in assessing for subtle stereognostic deficits in trauma patients.
- Pathogenesis of astereognosis may involve structures beyond the post-central gyrus, including the dorsal column medial lemniscus tract, brainstem, foramen magnum, and cervical spinal cord.
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