There is a secretion of fluid to lubricate and moistens the cavity of the nose, which under catarrh or cold is increased in, and altered in appearance and consistency. This will properly belong to our account of catarrh or cold, but that to which we immediately refer, is a continued and oftentimes profuse discharge, when every other symptom of catarrh and fever has passed away; an almost incredible quantity of thickened mucus of different colours; if the horse is at grass, almost as green as the food on which he lives; or if he be stabled, white, straw- coloured, brown, or even bloody, and sometimes evidently mingled with matter or pus; and either constantly running, or snorted out in masses many times in the day, Lib. of Useful Knowledge.
Sometimes the discharge comes only from one nostril, at other times both nostrils are affected; in some cases the glands under the jaw are enlarged, in other cases no enlargement can be discovered; perhaps after the discharge has been very copious for some time it suddenly stops, and the animal remains free from any discharge for several weeks, when it comes on again as bad as ever; generally speaking, exercise increases the discharge. I have known horses affected with this disease to continue free from any discharge for six or eight weeks, whilst they have continued to rest; they have been taken to work, and in a day or two the discharge has reappeared as abundantly as ever.
REMEDIES: Arsenicum, Silicea, Pulsatilla, Sulphur.
Arsenicum, if the discharge is greenish and acrid, causing soreness of the nostrils, also if the evacuations from the bowels are green.
Dose. Six drops or ten globules twice a day for a week, if at the end of that time there is little or no improvement, give Sulphur in the same manner for the next week, then if advisable commence with the Arsenicum again as above directed.
Pulsatilla, is an excellent remedy when the discharge smells badly and is of a dirty blue colour, sticks about, and dries on the edges of the nostrils.
Dose. Six drops night and morning.
Silicea may be used when the discharge is continual, enlargement of the gland under the jaw, the animal wastes away and sweats from the slightest exertion.
Dose. Six drops or ten globules night and morning.