Follicular dysplasia of the black layer, is a dermatopathy restricted to areas of black hair of dogs with two or more layers of colors. Studies have mentioned a primary problem in the hair follicle, where an autosomal recessive inheritance is involved. The diagnosis is made thanks to the clinical...

Black hair follicular dysplasia (BHFD) is an unusual canine skin disorder defined as alopecia confined to black regions of the hair coat. First clinical abnormalities are usually noted around four weeks of age and comprise fracture of hair shafts in black-coated regions, later resulting in partial...

Black-hair follicular dysplasia (BHFD) is a hereditary genetic disease that leads to the occurrence of cutaneous changes in the skin and hair in areas of black hair coverage, such as hypotrichosis, alopecia, melanoderma and scaling. Since it is a rare cutaneous disease, the aim of this work is to...

CASE HISTORY: A 6-year-old intact male New Zealand Huntaway dog had slowly progressive alopecia that was first observed at 12 weeks of age. CLINICAL FINDINGS: Patchy alopecia was confined to the black-haired areas of the body, and was most evident on the head and dorsum of the body; tan-haired...

Black hair follicular dysplasia is a rare dermatological disorder observed in bi-or tricolor pure or mixed-breed dogs. Affected animals exhibit alopecia, which is restricted solely to the black hair areas. Diagnosis should be dermatopathologically based. There is no effective treatment. A...

Four Large Münsterländer cross-bred dogs affected with black hair follicular dysplasia (BHFD) and one unaffected control littermate were observed, and skin was sampled weekly over the first 19 weeks of life. Affected dogs were born with silvery grey hair, a consequence of melanin clumping in the ...

Two-month old male Shih Tzu weighing 2.1 kg was presented with alopecia in black-haired areas of the skin. Hair loss had been present since five weeks of age. There was no history of pruritus on any part of the body. No other symptoms had been recognized. Physical examination found no abnormalities ...

Background: The "rat-tail" syndrome (RTS) is an inherited hypotrichosis in cattle, which is exclusively expressed in diluted coloured hair. The affected animals also suffer from disturbed thermoregulation, which impairs their health and growth performance. Phenotypic features that are similar to...

Four black and white female Saluki puppies developed variably severe hypotrichosis in black haired areas. Histologically, follicles in black haired areas were dilated with keratin and clumps of melanin pigment, and were irregularly shaped. Melanin pigment was also clumped in hair shafts, basal...

A litter of 8 Saluki puppies were whelped normally to a grizzle (equal mixture of dark and lighter hairs with darker hairs predominating from the forehead to the tail) bitch and a black-fringed, red-and-white flecked particolour sire. No abnormalities were seen until the litter of 4 tricolours (3...