Hair fragility (trichorrhexis nodosa) in alopecic Pomeranian dogs
2025

Hair Fragility in Alopecic Pomeranian Dogs

Sample size: 44 publication 10 minutes Evidence: moderate

Author Information

Author(s): Brennan Erin, Juhola Jonna, Ferguson Ewan A., Loeffler Anette, Cerundolo Rosario, Hendricks Anke, Bond Ross

Primary Institution: Royal Veterinary College

Hypothesis

Hair fragility events would be more frequent in dogs with a phenotype of hair cycle arrest (HCA) compared to dogs with normal coats.

Conclusion

Clinicians should routinely perform trichography in Pomeranians with HCA because hair abnormalities may contribute to poor coat quality.

Supporting Evidence

  • Eight alopecic Pomeranian dogs were studied alongside 36 unaffected dogs.
  • Hair fragility events were significantly higher in affected dogs compared to unaffected ones.
  • Trichorrhexis nodosa was the most common hair shaft abnormality observed.

Takeaway

This study found that Pomeranian dogs with a specific type of hair loss have fragile hair, which can make their fur look bad.

Methodology

Affected dogs underwent dermatological examination and hair samples were microscopically examined for structural abnormalities.

Potential Biases

Potential bias due to reliance on owner-reported observations for unaffected dogs.

Limitations

The study did not include a standardized set of diagnostic tests for alopecic dogs.

Participant Demographics

Eight alopecic Pomeranian dogs and 36 unaffected Pomeranians.

Statistical Information

P-Value

p<0.05

Confidence Interval

90% CI

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1111/vde.13296

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