This section is from the book "The Farmers Ready Reference Or Hand Book Of Diseases Of Horses And Cattle", by S. C. Orr. . Also available from Amazon: The Farmer's Ready Reference;.
This is not a very common disease among horses in the "Great West," although it does occur occasionally.
Causes. - It may come from keeping in too high condition; from concussion produced by a fall, or by a blow about the head, or it may follow some other disease.
Symptoms. - The attack is generally preceded by dullness; and if the horse is in the stable he will often rest his head on the manger; the pulse will be full, but the beat will be slower than usual; the breathing will be loud, resembling a snore. As it goes on the animal becomes excited and plunges about, reels, and sometimes falls. It will walk blindly against a wall and then stand and push with its head until the fit passes off. The pulse grows weak and more rapid and the convulsions more frequent and frenzied as the disease progresses, and the pupil of the eye becomes dilated.
Treatment. - If the animal is in good condition take four to six quarts of blood from the jugular vein; and keep cloths wet with cold water on the head. As soon as the animal becomes manageable give from six to ten drachms of aloes and a half ounce each of chloral hydrate and bromide of potassium; repeat the last two every four hours until the patient is quiet, then three times a day for a few days. When the aloes operate, if there is much fetor to the discharges, give one ounce of hyposulphite of soda three times a day. Give cold water freely and feed moderately on soft feed.