Atlas of livestock parasites
digitized collection of microscopical preparations

Atlas of Parasites Contents Information sources Glossary Administration

Otodectes cynotis (dog, cat)



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"otodectic mange"

Host: Otodectes cynotis mites are a common cause of otitis externa especially in cats but also in dogs. 

Life cycle: is similar like in family Psoroptidae.

Diagnosis: Mites that belong to the family Psoroptidae are usually found in both the vertical and horizontal ear canals, but occasionally are seen on the body.

Clinical features: signs include head shaking, continual ear scratching, and ear droop. Pruritus is variable. Dark brown cerumen accumulation in the ear and suppurative otitis externa with possible perforation of the tympanic membrane may be seen in severe cases.

Control: Affected and in-contact animals should receive appropriate parasiticide treatment in the ears and on the whole body for 2–4 wk. Other effective treatments include systemic macrocyclic lactones. Only selamectin and moxidectin (in some countries outside the USA) are approved for treatment of otodectic mange; they are given as spot-on formulations (see mange, cutaneous acariosis, mite infestation): sarcoptic mange: scabies). As a general rule, ear cleansing with an appropriate ceruminolytic agent is indicated with topical therapy and especially with systemic therapy.


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