My dog has dark, scaly, bald spots on her back. What could it be?

Question

My 8 year old CKCS (spayed female) has developed two circular, dark ,scaly, bald patches on her back in the past few weeks. One spot has grown its hair back, however, the skin is still very dark. The other spot is dark an d scaly without any sign of hair growth. The spots are dime sized. Pet's info: Dog | Cavalier King Charles Spaniel | Female | spayed | 8 years and 9 months old | 28 lbs

Silvia De Cecco, DVM, MRCVS · Accepted Answer

Thanks for posting on the forum! Focal alopecia (local hair loss) can be a sign associated to different skin diseases. The most common are: Demodicosis (parasitic infection), dermatophytosis (fungal infection), scars, medication application site, alopecia areata (uncommon). I would suggest to have Maya checked by your veterinarian as further test are needed to make a diagnosis and prescribe the correct treatment, if needed. Your vet might perform a skin scrape to check for parasite and collect a sample to exclude a fungal infection; further test might be needed depending on the results of the ones mentioned. If those basic tests are negative, a biopsy and a allergy testing under general anaesthetic/sedation might need to be performed.  Do not hesitate to post again on the forum or request a consultation if you would like to discuss it any further.

My dog has dark, scaly, bald spots on her back. What could it be?

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