Changes

==Signalment==  

==Signalment==  

Cases of Grass sickness are restricted to Northwestern Europe and South America with the highest incidence in the UK, in some parts of Eastern Scotland 1% of horses die annualy from the disease. Young animals, '''2-7 years''' old are predisposed.

Cases of Grass sickness are restricted to Northwestern Europe and South America with the highest incidence in the UK, in some parts of Eastern Scotland 1% of horses die annualy from the disease. Young animals, '''2-7 years''' old are predisposed.

The disease occurs in warm wet weather with peak incidences in '''spring''' and '''autumn'''. Affected horses usually live at pasture, those that have moved pasture within the preceeding two months are also at greater risk. In many cases the disease appears to be related to specific pstures or fields with a history of grass sickness affected horses, however it has been reported in animals with none of the usual risk factors.

The disease occurs in warm wet weather with peak incidences in '''spring''' and '''autumn'''. Affected horses usually live at pasture, those that have moved pasture within the preceding two months are also at greater risk. In many cases the disease appears to be related to specific pastures or fields with a history of grass sickness affected horses, however it has been reported in animals with none of the usual risk factors.

==Diagnosis==

==Diagnosis==