Certified Veterinary Assistant (CVA) Level I Practice Test

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What is the primary cause of scabies?

Bacteria

Fungi

Acari (mites)

The primary cause of scabies is Acari, which refers to mites, specifically the Sarcoptes scabiei mite. This tiny burrowing mite is responsible for the condition by invading the top layer of the skin, where it causes intense itching and irritation as it lays its eggs. The condition is highly contagious, spreading through close personal contact or shared clothing and bedding.

Mites are ectoparasites that thrive on the skin's surface, leading to an inflammatory response from the host, characterized by red, inflamed rash and severe itching. Understanding that scabies is caused by a parasitic infestation is crucial for identifying the appropriate treatment, which typically involves topical insecticides or systemic medications to eradicate the mites and relieve symptoms.

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