Dog Sarcoptic Mange: Diagnosis and Treatment

Sarcoptic mange is a highly contagious parasitic skin disease in dogs caused by the mite Sarcoptes scabiei, causing intense pruritus and significant welfare impact.

Key Facts

Sarcoptes scabiei mites burrow into the epidermis causing intense itching and skin damage
The condition is zoonotic and can temporarily infect humans causing a self-limiting rash
Diagnosis can be challenging as mite numbers are often low and skin scrapes may be negative
Serological testing has improved diagnostic accuracy when clinical suspicion is high
Treatment requires systemic acaricides such as ivermectin, selamectin, or isoxazolines
All in-contact animals should be treated simultaneously to prevent reinfection
Environmental decontamination is important as mites can survive off-host for several days

Welfare Considerations

Sarcoptic mange causes severe welfare compromise through unrelenting pruritus, skin thickening, hair loss, and secondary bacterial infection. Dogs may mutilate themselves through scratching and biting, leading to wounds and pain. The intensity of itch is described as extreme and constant. Early diagnosis and prompt treatment are critical to reducing suffering. The highly contagious nature means household contact animals also face welfare risk. Modern isoxazoline treatments offer rapid relief within days of starting therapy.

What You Can Do

Seek veterinary attention promptly for any dog with intense unexplained itching
Treat all in-contact dogs and cats simultaneously as recommended by your vet
Wash all bedding and soft furnishings in hot water during treatment
Inform your vet if human household members develop an itchy rash
Complete the full treatment course even if symptoms improve quickly
Avoid contact with stray or unknown dogs with skin lesions
Consider regular preventive parasite treatment for dogs with outdoor exposure