This section is from the book "Everything About The Dogs", by Alvin George Eberhart. Also available from Amazon: Everything About Dogs.
Pus or matter forming in or among the tissues is abscess. It may be due to a blow, an accident, or caused by local or general inflammation. A bitch may, after whelping, have one of the teats dammed up, which gives rise to lacol inflammation, which would end in abscess. There is unusual heat of the parts while the abscess is forming; a hard lump at first, but as the matter forms this becomes softer, and is movable under pressure of the hand. Should it form very slowly, hasten its formation by hot fomentations, which must be used continually for some time, and afterwards cover the parts to prevent reaction from cold air. If you can keep a poultice on the part this is very useful. Get from your druggist a piece of spongia piline, satuate it with warm water and apply with the waterproof side out. When the under part of the abscess is soft and moves readily under pressure, it is ready for opening. To open it take the lancet between finger and thumb and plunge it well into the center, making a clean downward cut to insure good drainage; press out the matter, bathe with warm water and keep it clean, which, in most cases, will be kept so by the dog's tongue if on part of body where he can reach it. If not, then apply Peroxyde of Hydrogen three or four times a day.
In cases where the abscess is deep-seated, the veterinary surgeon alone should use the knife. A light and nutritious diet should be given, and in many cases no medicine is required,, but a mild purge can be given when it is forming. Should dog be much reduced and his appetite impaired after an abscess a short treatment of Sergeant's or Clayton's Condition Pills will do al ot of good. Abscesses forming in lung disease would discharge the matter through the nose, also be coughed up, while in the uterus it would be by the vagina. Other internal organs may be the seat of abscesses, but none of these cases can be treated by the amateur, but should be intrusted to the veterinary surgeon.
 
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