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Juvenile-onset and adult-onset demodicosis in dogs in the UK: prevalence and breed associations

O'Neill, D G; Turgoose, E; Church, D B; Brodbelt, D C; Hendricks, A


D G O'Neill

E Turgoose

D B Church

D C Brodbelt

A Hendricks


To explore epidemiological features of demodicosis relevant to UK veterinary general practitioners. Breed risk factors were proposed as distinct between juvenile‐onset and adult‐onset disease.

Materials and Methods
The study used anonymised clinical data on dogs under primary veterinary care at practices enrolled in the UK VetCompass Programme. Case inclusion required recording of a final demodicosis diagnosis for a dermatological condition that was present during the 2013 study period. Risk factor analysis used multivariable logistic regression modelling.

In dogs aged 4 years (adult‐onset), the 1‐year period prevalence was 0.05% (95% confidence interval: 0.0.04 to 0.06). Six breeds showed increased odds of demodicosis compared with crossbred dogs: Chinese shar‐pei, shih‐tzu, West Highland white terrier, pug, boxer and Border terrier.

Clinical Significance
Juvenile‐onset demodicosis is much more common (about 10 times higher) than the adult‐onset form. Knowledge of the predisposed breeds for these two presentations can assist with diagnosis and support the concept of distinct aetiopathogenetic phenotypes.


O'Neill, D. G., Turgoose, E., Church, D. B., Brodbelt, D. C., & Hendricks, A. (2019). Juvenile-onset and adult-onset demodicosis in dogs in the UK: prevalence and breed associations. Journal of Small Animal Practice,

Journal Article Type Article
Acceptance Date Aug 19, 2019
Publication Date Oct 4, 2019
Deposit Date Oct 10, 2019
Publicly Available Date Oct 10, 2019
Journal Journal of Small Animal Practice
Print ISSN 0022-4510
Publisher Wiley
Peer Reviewed Peer Reviewed
Public URL


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