This section is from the book "Everything About The Dogs", by Alvin George Eberhart. Also available from Amazon: Everything About Dogs.
Dalziel's treatise and treatment I give in full, for it is eminently correct, judging by my own experience. It is a hard disease to cure, but I have cured young dogs one or two years old. Read what Dalziel says, and if you have a dog so afflicted, at least try to cure it. I never admit but what any disease can be cured,-or helped, and I try every remedy anyhow. Sergeant's Condition Pills have cured cases in younger dogs for me, and as they always do good and never harm, it is worth while trying, for you will be doing your dog some good at least. There is not much, if any, pain in chorea, and I had a pug bitch three years old that had a chronic case of it, but yet she bred and raised a healthy litter of pups. This was an exception, however, as, being a nervous trouble, it is transmitable, and I would not advise using either a bitch or a dog for breeding purposes that was so afflicted. It is, of course, unpleasant to see a dog constantly twitching or jerking, but so long as they do not suffer I think it my duty to let them live.
"This most distressing complaint arises from some derangement of the nervous system, and generally exists as a sequence of distemper, when It is known among kennel men as "the twitch." Chorea, or St. Vitus' dance, may, however, arise from other causes, producing a disturbing effect on the nervous system such as a severe Injury or blow on the head, the Irritation caused by worms, or long-continued impaired digestion. By far the most common cause, however, is distemper, the brain receiving some Injury in that variety of the disease known as "Head Distemper." The symptom indicating chorea is a peculiar involuntary convulsive twitching of the muscles. These spasmodic movements or jerkings may be either partial or general, but usually partial. One or both hind legs are affected, or the twitching extends to the muscles of the fore legs, neck and shoulders, in which case the head Is bobbed up and down in a silly, helpless manner. Sometimes the eyelids and muscles of the face are affected, but whatever part of the body, is attacked the peculiar twitching or jerking is always unmistakable. When the hind quarters are the seat of the disease the dog will sometimes suddenly drop one of the limbs from the hip joint, apparently from sudden loss of power or command over the guiding muscles. The weakness is strongly shown when the dog attempts to jump onto a chair or the lap, which he fails to do, and generally falls on his side "all in a heap." There are very few dogs severely afflicted with chorea that ever get completely cured. When the attack is but slight the dog may live for years and prove a useful animal, as, except in severe cases, it does not seem to greatly impair the general health. The constant twitching is, however, so annoying a sight to most people that few would care to keep a dog thus afflicted. Although dogs carefully and properly treated in distemper are less likely to suffer from this disease, yet it will occasionally occur in the best managed kennels, and so I must proceed to consider its treatment. The first thing to be clone is to attend to the general health, and especially to see that the bowels are in a properly regulated state; and it is better, if their action requires correction, to endeavor to accomplish that object by a careful regulation of diet, rather than by a resort to physic; indeed, all through chorea the food must be of a nature easily digested and given with regularity if any course of medicinal treatment is to be successful. The remedies recommended in chorea are arsenic, sulphate of zinc, nitrate of silver and nux vomica and its preparations. Arsenic I do not recommend, but either of the following may be tried, and it is sometimes found that using them alternately has a more beneficial effect than a perseverance with one remedy only. Pills may be made thus:
Sulphate of Zinc. Pills.
Sulphate of zinc ............................ 24 grains.
Extract of gentian .......................... 18 grains.
Powdered gum acacia........................ 18 grains.
Make into twelve pills. Dose for a dog 30-lb. to 50-lb. weight, one pill twice a day. Small dogs a half pill as a dose.
Nitrate of Silver Pills.
Nitrate of silver ............................. 3 grains.
Bread ...................................... 2 drams.
Make Into twenty-four pills. Dose for a dog 30-lb. to 50-lb. weight, one pill twice a day given at the time of feeding. Small toy dogs of 10 to 3.2 lbs. give one-half a pill as a dose.
The following pills I have found Very successful, and can strongly recommend them, although, of course, they are not infallible. As the ingredients require very great accuracy In weighing, and very careful mixing, this must be left to a properly qualified dispensing chemist, and the box containing the pills should be kept strictly in the master's possession, for fear of accident:
Strychnine ................................. 1 grain.
Quinine .................................... 18 grains.
Extract of belladonna........................ 6 grains.
Extract of gentian .......................... 1 dram.
Powder for Compond Rhubarb Pill............ 1 dram.
Mix very carefully and divide into forty-eight pills. Dose for a dog 20-lb. to 40-lb. weight, one pill twice a day with his food. Small dogs, half a pill. St. Bernards, one and one-half pills as a dose.
"It is necessary in chorea to continue the use of these remedies for a considerable time - at least a month or two months, in most cases - to produce any satisfactory result, or even to give them a fair trial; and, as before said, the dog must be carefully fed, well lodged and properly exercised when he has sufficient power to use his limps, and in the case of dogs reared in towns, a change to the country for some weeks would be beneficial. Galvanism has been recommended for chorea; I have not seen it tried, but should think it well worth a trial."
 
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