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Updated: Jul 20, 2026
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Investigations on Alterations of Hippocampal Circuit Function Following Mild Traumatic Brain Injury
Published on: November 19, 2012
Olfactory dysfunction: a sequela of pediatric blunt head trauma.
Amanda A Sandford1, Terence M Davidson, Norma Herrera
1San Diego State University, Center for Lifespan Human Senses, Department of Psychology, 6363 Alvarado Court, Ste. 101, San Diego, CA 92120-4913, USA.
International Journal of Pediatric Otorhinolaryngology
|December 20, 2005
Summary
Children with blunt head trauma may experience impaired sense of smell. More severe head injuries, indicated by lower Glasgow Coma Scores (GCS), are linked to poorer olfactory function, necessitating cranial nerve I evaluation.
Area of Science:
- Neurology
- Otorhinolaryngology
- Pediatric Traumatology
Background:
- Blunt head trauma in children can lead to various neurological deficits.
- Olfactory dysfunction is a potential, yet often overlooked, consequence of head injuries.
Purpose of the Study:
- To investigate olfactory function in pediatric patients following blunt head trauma.
- To determine the correlation between head injury severity and olfactory impairment.
Main Methods:
- Evaluated 37 children with blunt head trauma and 36 healthy controls using the San Diego Children's Odor Identification Test (SDOIT).
- Reviewed medical records for clinical measures including Glasgow Coma Scores (GCS) and head CT findings.
- Recorded olfactory event-related potentials in a subset of participants.
Main Results:
- Olfactory dysfunction was identified in 3 out of 37 head-injured children.
- Head-injured children with hyposmia (reduced sense of smell) exhibited lower GCS compared to normosmic counterparts.
- Lower GCS and abnormal head CT scans were associated with poorer olfactory performance in head-injured children.
Conclusions:
- Blunt head trauma in children can result in post-traumatic olfactory impairment.
- The severity of head injury directly correlates with the likelihood and degree of olfactory deficits.
- Cranial nerve I (olfactory nerve) assessment is crucial in managing children with significant head injuries.
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