Mal seco, a grass sickness-like syndrome of horses in Argentina

Francisco A Uzal, C. A. Robles

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


Mal seco is a grass sickness-like syndrome of horses which has mainly been observed in Patagonia, Argentina, although some reports indicate that the disease may exist in other Argentinian provinces and in the south of Chile. The aetiology of mal seco remains unknown but the disease seems to be restricted to animals grazing on natural pastures and not receiving supplementary feeding. Mal seco is clinically characterized by total or partial bowel stasis and the main findings at post-mortem examination are almost exclusively restricted to the bowel. The most striking histopathological changes found consisted of degenerative changes in the coeliaco-mesenteric ganglia and also in other central and peripheral structures of the nervous system.

Original languageEnglish (US)
Pages (from-to)449-457
Number of pages9
JournalVeterinary Research Communications
Issue number6
StatePublished - Nov 1993
Externally publishedYes


  • aetiology
  • epidemiology
  • grass sickness
  • mal seco
  • Patagonia
  • pathology

ASJC Scopus subject areas

  • veterinary(all)


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