Changes

==Signalment==

==Signalment==

Foals younger than 6 months on a poor worming schedule and with a heavy parasite burden.  Recent history of being wormed with a product that causes sudden ascarid death.

Foals younger than 6 months on a poor worming schedule and with a heavy parasite burden.  Recent history of being wormed with a product that causes sudden ascarid death.

==Aetiology==

==Aetiology==

Products that cause sudden death of ascarids, particularly ''Parascaris equorum'' within the small intestine.  Adult ascarids are large and thus readily cause small intestinal impaction.  Suspected products include(37):

Products that cause sudden death of ascarids, particularly [[Parascaris Equorum|''Parascaris equorum'']] within the small intestine.  Adult ascarids are large and thus readily cause small intestinal impaction.  Suspected products include(37):

*Organophosphates

*Organophosphates

*[[Macrocyclic Lactones|Ivermectin]]

*[[Macrocyclic Lactones|Ivermectin]]