Dysautonomia in a six-year-old mule in the United States.
Authors: Wright A, Beard L, Bawa B, Bras J
Journal: Equine veterinary journal
Summary
# Editorial Summary: Dysautonomia in a Six-Year-Old Mule in the United States Equine grass sickness (EGS), or dysautonomia, represents a devastating neurological condition long established in Europe and other regions, yet notably absent from documented North American cases until this report. Wright and colleagues present a detailed clinical account of EGS occurring in a six-year-old mule in the USA, highlighting the diagnostic challenges that emerge when clinicians are unfamiliar with the condition's presentation in a previously unaffected geographical area. The delayed diagnosis in this case underscores a critical knowledge gap: practitioners across North America may not be actively considering EGS in their differential diagnoses for compatible neurological presentations, potentially missing opportunities for early intervention and epidemiological surveillance. This case report carries significant implications for equine professionals in the region, suggesting that EGS awareness and diagnostic protocols should now be integrated into standard workup procedures for acute dysautonomia-like presentations, particularly given the disease's high mortality and welfare implications. The authors' call for heightened vigilance and appropriate diagnostic testing in similar cases is essential for establishing whether EGS represents an emerging disease threat in North America or whether additional cases have simply gone unrecognised.
Read the full abstract on PubMed
Practical Takeaways
- •Add equine grass sickness to your differential diagnosis list for equine cases in North America, despite its previous absence in the region
- •Perform appropriate diagnostic tests for EGS when clinical signs warrant it, to avoid delayed diagnosis and treatment
- •Maintain awareness that established geographic disease patterns may change, requiring updated clinical knowledge
Key Findings
- •Equine grass sickness was documented for the first time in North America in a 6-year-old female mule
- •Initial failure to consider EGS as a differential diagnosis resulted in delayed diagnosis
- •EGS should be included in differential diagnosis protocols for similar cases in North American equine populations