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Hair loss in dogs
N Z Vet J. 2009;57:170
Black-hair follicular dysplasia in a New Zealand Huntaway Dog.
Munday JS, French AF, McKerchar GR.
A 6-year-old intact male dog had slowly progressive hair loss first observed at 12 weeks of age. ... Patchy hair loss was confined to the black-haired areas of the body, and was most evident on the head and dorsum of the body; tan-haired areas of skin appeared normal. Histological examination of black-haired skin revealed distended melanocytes and large aggregates of melanin within, and surrounding, the hair follicles and the epidermis. The clinical and histological findings were consistent with black-hair follicular dysplasia (BHFD). ... This is the first report of BHFD in a dog in New Zealand, and is the first report in a Huntaway. The most significant effect of BHFD is a predisposition to follicular plugging and secondary bacterial skin infections. Due to the hereditary nature of the follicular dysplasias, breeding from affected dogs should be discouraged. snip
Edited for hair loss treatment blog