, which resembles mange, is sometimes the consequence of exposure to cold after a hot sultry day. Large blotches appear, from which the hair falls and leaves the skin bare and rough. Acute mange sometimes takes on the character of erysipelas; at other times there is considerable inflammation. The animal exhibits heat and restlessness, and ulcerations of different kinds appear in various parts, superficial but extensive.
, aperient and cooling medicines are indicated, and also applications of the subacetate of lead, or spermaceti ointment. A weak infusion of tobacco may be resorted to when other things fail, but it must be used with much caution. The same may be said of all mercurial preparations. The tanner's pit has little efficacy, except in slight cases. Slight bleedings may be serviceable, and especially in full habits; setons may be resorted to in obstinate cases. A change in the mode of feeding will often be useful. Mild purgatives, and especially Epsom salts, are often beneficial, and also mercurial alternatives, as Æthiop's mineral with cream of tartar and nitre. The external applications require considerable caution. If mercury is used, care must be taken that the dog does not lick it. The diarrhœa produced by mercury often has a fatal effect.
are useful, but considerable care must be taken in their application. They must be applied to the actual skin, not over the hair. In old and bad cases much time and patience will be requisite. Mr.
had a favourite setter who had virulent mange five years. He was ordered to be dressed every day, or every second day, before the disease was complete conquered.
Cutaneous affections have lately been prevalent to an extent altogether unprecedented on this and on the other side of the channel. In the latter part of 1843 the disease assumed a character which had not been known among us for many years. The common mange, which we used to think we could easily grapple with, was now little seen: even the usual red mange with the fox-coloured stain was not of more frequent occurrence than usual, but an intolerable itchiness with comparatively little redness of skin, and rarely sufficient to account for the torture which the animal seemed to endure, and often with not the slightest discoloration of the integument, came before us almost every day, and under its influence the dog became ill-tempered, dispirited, and emaciated, until he sunk under its influence. All unguents were thrown away here. Lotions of corrosive sublimate, decoction of bark, infusion of digitalis or tobacco, effected some little good; but the persevering use of the iodide of potassium, purgatives, and the abstraction of blood very generally succeeded.
The sudden appearance of redness of the skin, and exudation from it, and actual sores attending the falling off of the hair, and itching, that seemed to be intolerable, have also been prevalent to an unprecedented extent. This mange, however, is to a certain degree manageable. A dose or two of physic should he given, with an application of a calamine powder, and the administration of the iodide of potassium.
Mr. Blaine gives a most valuable account of mange in the dog, part of which I shall quote somewhat at length. Mange exerts a morbid constitutional action on the skin; it is infectious from various miasmata, and it is contagious from personal communication. In some animals it may be produced by momentary contact; it descends to other animals of various descriptions; there is no doubt that it is occasionally hereditary: it is generated by effluvia of many various kinds; almost every kind of rancid or stimulating food is the parent of it. High living with little exercise is a frequent cause of it, and the near approach of starvation is not unfavorable to it. The scabby mange is the common form under which it generally appears. In red mange the whole integument is in a state of acute inflammation; surfeit, or blotches, a kind of cuticular eruption breaks out on particular parts of the body without the slightest notice, and, worse than all, a direct febrile attack, with swelling and ulceration, occurs, under which the dog evidently suffers peculiar heat and pain. Last of all comes local mange. Almost every eruptive disease, whether arising from the eye, the ear, the scrotum, or the feet, is injurious to the quality as well as the health of every sporting dog: the scent invariably becomes diseased, and the general powers are impaired.