how can I tell if my horse has mange?

Sarcoptes scabiei var equi:

is rare in the USA but is the most severe type of mange in horses. The first sign is intense pruritus due to hypersensitivity to mite products. Early lesions appear on the head, neck, and shoulders. Regions protected by long hair and lower parts of the extremities are usually not involved. Lesions start as small papules and vesicles that later develop into crusts. Alopecia and crusting spread, and the skin becomes lichenified, forming folds. If untreated, lesions may extend over the whole body, leading to emaciation, general weakness, and anorexia. Negative skin scrapings do not rule out the disease; biopsy may establish a diagnosis. If suspected, sarcoptic mange must be treated. Organophosphate insecticides or lime-sulfur solution can be used by spraying, sponging, or dipping. Treatment should be repeated at 12- to 14-day intervals at least 3-4 times. Alternatively, the oral administration of ivermectin or moxidectin at 200 µg/kg can be attempted. Several treatments are required 2-3 wk apart. It is important to treat all contact animals.

Psoroptic Mange:

Psoroptes equi is rare in horses; it produces lesions on thickly haired regions of the body, such as under the forelock and mane, at the base of the tail, under the chin, between the hindlegs, and in the axillae. P cuniculi can sometimes cause otitis externa in horses and may cause head shaking. Pruritus is characteristic. Lesions start as papules and alopecia and develop into thick, hemorrhagic crusts. Mites are more easily recovered from skin scrapings compared with sarcoptic mange. Treatment is as for sarcoptic mange.

Chrioptic Mange:

Chorioptic mange is common in heavy breeds of horses. Lesions caused by Chorioptes equi start as a pruritic dermatitis affecting the distal limbs around the foot and fetlock. Papules are seen first, followed by alopecia, crusting, and thickening of the skin. A moist dermatitis of the fetlock develops in chronic cases. It is a differential diagnosis for “greasy heel” in draft horses. The signs subside in summer but recur with the return of cold weather. The disease course is usually chronic without treatment, but the prognosis is favorable when treated. Topical treatments recommended for other manges are effective.

Demodectic Mange:

Demodex equi is rare in horses. The mites live in the hair follicles and sebaceous glands; D equi lives on the body, and D caballi in the eyelids and muzzle. Demodicosis in horses can manifest as patchy alopecia and scaling, or as nodules. Lesions appear on the face, neck, shoulders, and forelimbs. Pruritus is absent. This disease has been reported in association with chronic corticosteroid treatment. No effective treatment regimens have been developed. Amitraz, used in other species, is contraindicated in horses because it can cause severe colic and death.

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Ive never heard of it or seen it in horses its a new one on me.I have however seen what we called rainrot which was prevalent in horses that were kept outside for long periods. It looks alot like ringworm with loose patches of hair and was a major problem with horses that were on field board.Your vet should be able to recomend something to treat it but as far as mange Ive oly seen it in dogs.The old school treatment for the mutts was coal oil but Im sure they have something better now. Good luck Brian

mange is caused by a really really really small bug kinda like a flea but much smaller and they dig them selves under the skin. if you think the horse had mange take it to a vet that deals with the bigger animals like horses. they will do a test on the horse that you cant do at home. and tell you if your horse does or not. then they will give you the meds you would have to get at the vet anyways. make shure you wash your self really well with hot watter and lots of soap after touching the horse mange is contagious to humans to and WILL make your hair fall out and make you itch like crazy

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