Short answer: Mange is a parasitic skin infection from mites – two main types: demodectic mange (Demodex canis – commensal mite overgrowth, not contagious) and sarcoptic mange (Sarcoptes scabiei – intensely itchy, contagious to humans and other dogs). Both treatable with isoxazolines or other antiparasitics.
What you should actually do
- Demodex: commensal mite that all dogs carry; overgrowth happens with immune suppression (young, ill, immunocompromised). Not contagious.
- Sarcoptes (scabies): intensely itchy, contagious to dogs and humans, classic ear edge crusting + elbow lesions.
- Demodex signs: focal patches of hair loss without intense itching; may resolve spontaneously in juveniles.
- Sarcoptes signs: rapid onset of intense itching, secondary infections, weight loss.
- Treatment: isoxazoline flea-tick products (NexGard, Bravecto, Simparica) effective for both within 1-2 doses.
The discovery that isoxazolines treat mange has revolutionized care – what used to require weekly amitraz dips for months is now resolved with a single oral chew that lasts 30-90 days.
Suspected sarcoptic mange: 4-week treatment trial with isoxazoline (in case skin scrape is negative). Confirmed demodicosis in adult onset: investigate underlying immune compromise (Cushing’s, hypothyroid, neoplasia).
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⚕️ Medical Disclaimer
The information on this page is intended for educational purposes only and does not replace a hands-on veterinary examination. Drug doses depend on your dog’s complete clinical picture, concurrent medications, and the exact product formulation. Always confirm dosing with your veterinarian before administering any medication, and contact a 24-hour veterinary emergency service or animal poison control immediately if you suspect a medication overdose or adverse reaction. Editorial standards: every drug dose published on PuppaDogs is cross-checked against multiple authoritative veterinary references and reviewed by PuppaDogs Veterinary Editorial Team before publication.
