Korean J Vet Res.  2011 Dec;51(4):315-318.

Pattern alopecia in a miniature pinscher dog

• Kang J
• Lee W
• Park J
• Oh T
• Cho S
• Park S

Abstract

A dog (5.6 kg, 4-year-old, castrated male, Miniature pinscher) with diffuse symmetric alopecia on the chest and excessive scales was referred to Veterinary Medical Teaching Hospital of Chungnam National University, Korea. On physical examination, diffuse alopecia on ventral aspect of the neck and caudomedial thighs, and severe scales were presented. Dermatologic tests of lesions revealed bacterial infections. Histopathologically, atrophy of hair bulb was observed in the severely alopecic lesion of caudomedial thighs. ACTH stimulation test was performed to differentiate the endocrine disorder related to generalized alopecia. The pre-ACTH serum testosterone and progesterone concentrations were above normal ranges and the post-ACTH serum testosterone concentration was high. The pre- and post-ACTH serum estradiol and cortisol concentrations were within normal ranges. Canine pattern alopecia was diagnosed based on history, physical examination, hormonal assay and dermatohistopathologic examination. After 3 months of melatonin administration, multifocal alopecia on the trunk was improved and general hair regrowth was identified.

Keyword

dog; melatonin; miniature pinscher; pattern alopecia

MeSH Terms

Adrenocorticotropic Hormone
Alopecia
Alopecia Areata
Animals
Atrophy
Bacterial Infections
Dogs
Estradiol
Hair
Hospitals, Teaching
Humans
Hydrocortisone
Korea
Male
Melatonin
Neck
Physical Examination
Preschool Child
Progesterone
Reference Values
Testosterone
Thigh
Thorax
Weights and Measures
Adrenocorticotropic Hormone
Alopecia Areata
Estradiol
Hydrocortisone
Melatonin
Progesterone
Testosterone