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- Title
Optimal microneedle length for hair regrowth in hair cycle arrest (alopecia X) in six dogs.
- Authors
Kang, Yeong‐Hun; Kim, Min‐Sun; Kang, Soh‐Yoon; Hyun, Jae‐Eun; Hwang, Cheol‐Yong
- Abstract
Background: Hair cycle arrest (HCA) is a chronic alopecic disorder in dogs. Clinical responses vary and are often insufficient. Microneedling (MN) has been used as a successful treatment for HCA in dogs; ideal protocols have not yet been established. Objectives: The objective of the study was to compare the efficacy and safety of three needle lengths for MN in dogs with HCA. Animals: Six unrelated client‐owned dogs, including five Pomeranians and one mixed‐breed dog, diagnosed with HCA. Materials and Methods: Individual alopecic sites were divided into three sections. For each section, different lengths of needles (1, 2 and 3 mm) were used. Efficacy and safety were evaluated at 1, 3 and 6 months. Treated sections were monitored for 20 months. Results: Three months after treatment with 3 mm needles, all sections showed hair regrowth. There was no hair regrowth in two of six sections treated with 2 mm needles, and four of six sections did not show a response to treatment with 1 mm needles. Two dogs developed transient pruritus. Five of six dogs had recurrent hair loss between 5 and 16 months of follow‐up. Conclusion and Clinical Relevance: Microneedling using longer needles stimulated better hair regrowth in dogs with HCA. Alopecia relapsed in most dogs and minor pruritus occurred in some dogs.
- Subjects
BALDNESS; DOGS; HAIR growth; HAIR; MICRONEEDLING; ARREST; TREATMENT effectiveness; DOG breeds; ITCHING
- Publication
Veterinary Dermatology, 2024, Vol 35, Issue 2, p184
- ISSN
0959-4493
- Publication type
Article
- DOI
10.1111/vde.13219