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Updated: May 25, 2025

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A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis ALS
Published on: February 21, 2011
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Head Injury and Amyotrophic Lateral Sclerosis: Population-Based Study from the National ALS Registry
Jaime Raymond1, Ileana M Howard2,3, Jasmine Berry1
1Agency for Toxic Substances and Disease Registry/Centers for Disease Control and Prevention, Atlanta, GA 30341, USA.
Brain Sciences
|February 26, 2025
Summary
Head injuries (HI) are linked to an earlier diagnosis of Amyotrophic Lateral Sclerosis (ALS). Multiple or severe head injuries, especially in youth, significantly increase the odds of an earlier ALS diagnosis.
Area of Science:
- Neurology
- Epidemiology
Background:
- Amyotrophic Lateral Sclerosis (ALS) is a progressive neurodegenerative disease.
- The potential role of head injury (HI) as a risk factor for ALS requires further investigation.
Purpose of the Study:
- To investigate the association between head injury (HI) and the age of diagnosis for Amyotrophic Lateral Sclerosis (ALS) in the United States.
Main Methods:
- Cross-sectional, population-based analysis of 3424 ALS patients registered between 2015 and 2023.
- Utilized data from the Registry's head trauma survey module.
- Assessed the association between HI and age at ALS diagnosis using multivariate analysis.
Main Results:
- Over half (56.6%) of surveyed ALS patients reported a history of head injury.
- A history of HI was associated with an increased odds of an ALS diagnosis before age 60 (aOR=1.24).
- Head injuries sustained in childhood (before age 18) showed a stronger association with earlier diagnosis (aOR=2.03).
Conclusions:
- Head injuries, particularly those occurring in childhood and early adulthood, are associated with an increased likelihood of an earlier ALS diagnosis.
- The number of head injuries also correlates with a younger age at diagnosis.
- These findings suggest that head injury may be a significant risk factor for ALS and could influence disease onset age.

