Grass Sickness is a disease of the autonomic nervous system, the nerves which control things we don't think about - heart rate, eye pupil, and gut movement. Grass sickness is a generalised autonomic disease but in the horse the effect on gut movement causes almost all the clinical signs. There are excellent resources on the web - The Equine Grass Sickness Fund has a lot of good information on their website.
Click here to open The Equine Grass Sickness Fund website homepage in a new window
Case Study - Chester:
Acute and sub-acute cases are always fatal, while about 50% of cases of chronic grass sickness can recover. A few years ago Charlotte Pimm's horse Chester was diagnosed with chronic grass sickness at Donnington Grove Veterinary Surgery. Chester happily made a complete recovery, and Charlotte kept a detailed diary of his illness.
Click hear to view Chester's Grass Sickness Diary in a new window