Ascariasis

Ascariasis



Basic Information  image



Definition


Mange caused by a variety of mites, including the chorioptic (leg mange) and psoroptic families



Synonym(s)


Mange



Epidemiology



Genetics and Breed Predisposition


Chorioptic mange typically affects draft breeds with heavy feathering in their legs but may occasionally affect light breeds with thin hair coats. Psoroptic mange typically affects young horses of any breed.



Risk Factors


Young, stabled horses are at increased risk of being affected by psoroptic mange. When introduced into a new barn, they can transmit the disease to older horses. Horses affected by chorioptic mange can be asymptomatic carriers.



Contagion and Zoonosis


Neither psoroptic nor chorioptic mange is considered a zoonotic disease. Both psoroptic and chorioptic mange are reportable diseases in the United States.



Geography and Seasonality


Both chorioptic and psoroptic mange are more frequently seen in the cooler months of the year. Psoroptic mange has been eradicated from horses in the United States but is still present in other areas.



Associated Conditions and Disorders


Psoroptic mange has been associated with tail rubbing and otic irritation, which may lead to head shaking. Chorioptic mange may cause weight loss, irritability, and decreased exercise tolerance.



Clinical Presentation



Disease Forms/Subtypes


Psoroptic and chorioptic mange



History, Chief Complaint




• Psoroptic mange is characterized by severe pruritus, head shaking, and tail rubbing. Papules, crusts, and alopecia are frequently seen at the base of the mane, tail, ears, and submandibular area, and it may then spread to the rest of the body.


• Chorioptic mange lesions are typically seen in the pastern area, but in severe cases, the infection may spread to the ventral abdomen or even become generalized. Pruritus in chorioptic mange is variable, and severe thickening of the skin with secondary bacterial infection may result from self-trauma.

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Jul 24, 2016 | Posted by in SMALL ANIMAL | Comments Off on Ascariasis

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