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From: http://www.merckvetmanual.com/mvm/index ... word=mange
Sarcoptic Mange (Canine Scabies): Sarcoptes scabiei canis infestation is a highly contagious disease of dogs found worldwide. The mites are fairly host-specific, but animals (including man) that come in contact with infested dogs can also be affected. The adult mite is roughly circular in shape, without a distinctive head, and has four pairs of short legs. Females are almost twice as large as males. The entire life cycle (17-21 days) is spent on the dog, where the female burrows tunnels in the stratum corneum and lays her eggs. Sarcoptic mange is readily transmitted between dogs by direct contact. The incubation period is variable (10 days to 8 wk) and depends on level of exposure, body site, and number of mites transmitted. Asymptomatic carriers may exist. Intense pruritus is characteristic and is probably due to hypersensitivity to mite products. Primary lesions consist of a papular eruption that, due to self-trauma, develops thick crusts with secondary bacterial infection. Typically, lesions start on the ventral abdomen, chest, ears, elbows, and legs and, if untreated, become generalized. Dogs with chronic, generalized disease develop severe thickening of the skin with fold formation and crust buildup, peripheral lymphadenopathy, and emaciation; dogs so affected may even die. "Scabies incognito" has been described in well-groomed dogs; these dogs, infested with sarcoptic mites, are pruritic, but demonstrating the mites on skin scrapings is difficult because the crust and scale have been removed by regular bathing. Diagnosis of sarcoptic mange is based on the history of severe pruritus of sudden onset, possible exposure, and involvement of other animals, including man. Sometimes, making a definitive diagnosis is difficult because of negative skin scrapings. Concentration and flotation of several scrapings may increase chances of finding the mites. Several extensive superficial scrapings should be done of the ears, elbows, and hocks; nonexcoriated areas should be chosen. Fecal flotation may reveal mites or eggs. Even if mites are not found but the history and clinical presentation are highly suggestive of sarcoptic mange, trial therapy is warranted. The hair should be clipped, the crusts and dirt removed by soaking with a good antiseborrheic shampoo, and an acaricidal dip applied. Lime-sulfur is highly effective and safe for use in young animals; several dips 5 days apart are recommended. Phosmet has been successfully used according to label instructions. Amitraz is an effective scabicide, although it is not approved for this use, and there have been some reports of lack of efficacy. Ivermectin is not approved for this use, but 200 µg/kg, PO or SC, two treatments 2 wk apart, is very effective and usually curative. Ivermectin at this dosage is contraindicated in Collies and Collie crosses, and the heartworm status of the dog should be evaluated before treatment. |
Also, please read the attached link as mange is not the only reason a dog can lose it's hair. In short it seems a trip to the vet may be in order. Mange and other related conditions are highly contagious your house and yard may need treatment also, the vet can tell you I don't really know about the house and yard part. Anybody else been through this?
Good Luck and have fun. |
I went through this last year with one of our cats. Like you, we thought that we had it resolved....and then a couple of months later, it came back. Strangely enough, none of the other animals in our household developed mange though.
Treatment - in addition to the medicine (I think it was ivermectin) and every other day baths (the veterinarian provided the shampoo called DermaBenSs), I cleaned EVERYTHING. Anything cloth the cat touched went into the washing machine. Wherever he sat or slept was wiped down with an antiseptic cleanser twice a day. It's the cleanest our house has been in years Anyway, as challenging as it was, giving him the baths seemed to make him feel better. I noticed that he scratched less after he had them. In addition, I added Ester C to his diet to boost his immune system. We haven't seen any signs of mange since the second episode - and believe me, we were watching everyone carefully - particulary our sheep dogs! Anytime one of them would scratch themselves, my husband and I would carefully check them over. Good luck - hopefully this will be the last time you need to go through this. Jennifer, Baxer, Cassipia & Sharkey |
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