Puppy itching, hair loss, red flaky skin: Is it ringworm or mange?
Without seeing it in person, I can't say if it's mange or ringworm for sure. Ringworm is typically a circular lesion that is red in color. Mange can be demodex or sarcoptic, but again without seeing him in person, I don't know which type it is. At the vet, they will likely use a Wood's lamp to see if the spot is ringworm, as infected hairs can fluoresce under the ultraviolet light. Not all cases of ringworm will do this, so a fungal culture may be needed. To diagnose mange, the vet takes skin scrapings, and looks at the sample under a microscope. The demodex mite is typically easily seen with a skin scraping, while it can take several skin scrapings to find the sarcoptic mite. Once the cause is found, the vet can discuss treatment with you. Good luck at the vet's tomorrow!
Updated on September 23rd, 2025