This section is from the book "Everything About The Dogs", by Alvin George Eberhart. Also available from Amazon: Everything About Dogs.
"During the time that a dog is suffering from distemper, it is well to watch carefully for any symptoms of paralysis, which would be indicated by twitching of the muscles and sometimes by a fit. There are a great many Of these cases nowadays - more than there used to be by far. Skin disease it should be regarded as kind of a safety valve, for dogs that suffer from skin complaint rarely, if ever, develop paralysis or chorea.
The following valuable article was taken from Field and Fancy:
Distemper in itself is not so serious a matter as are the troubles which follow in its wake. The most deadly of these is the complaint known as chorea, or paralysis, sometimes called "twitch," which is an involuntary jerking of the nerves, affecting sometimes the head, sometimes the legs, sometimes the whole body. It usually comes about in this way: A dog has distemper, and, as the owner believes, has it very mildly; he merely shows signs of a little cold, or perhaps he is merely "off color," as the expression is, loses his appetite and seems not to be himself for a few days, no other symptoms in particular making their appearance.
After a few days he is better, and the owner thinks he has had distemper and is getting over it, and nothing more is thought of the matter until a little later on - probably after the lapse of week or two - he has a fit, and on recovering from the fit it is found that he is twitching all over. This is not always what happens. In many cases the first symptoms of any-thig wrong takes the form of this involuntary twitching of the muscles; bpt the disease is very insidious and comes on in various ways, although it seems to be almost entirely connected with distemper, and the moral to be learned from this, therefore, is that any case of distemper, however mild, should be treated as seriously as if it were a bad attach, because this chorea or paralysis ought almost to be described as a sort of suppressed distemper, which, if the case is thoroughly treated, is brought out of the system instead of being allowed to lie dormant there until it affects the brain and causes the distressing symptoms of twitching, which in many cases last till the end of the dog's life.
With regard to carelessness in dealing with dogs which are convalescent. The most dangerous cases of distemper, apart from those in which there has been chorea or paralysis, are the cases in which the liver is very seriously affected. Jaundice, as every one knows who has had experience with it, is a very bad complaint, and it carries off a good many dogs. It very often occurs in combination with distemper, and when a dog which has been suffering in that way with a combination of distemper and liver complaint has taken a turn for the better great care will be needed for some time.
 
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