Black hair follicular dysplasia(BHFD)
Also known as: Follikeldysplasie der schwarzen Haare · Schwarzhaarfollikeldysplasie · Follikuläre Dysplasie der schwarzen Haare
Overview
What it is
Black hair follicular dysplasia is an inherited, autosomal-recessive skin condition in which pigment clumps abnormally inside hair follicles. This structural flaw causes only black hairs to become brittle and break off, while lighter-colored coat sections continue to grow normally. Because there is no commercial DNA test, a veterinarian confirms the diagnosis through microscopic hair examination and a skin biopsy.
How it presents
Owners usually notice changes around four weeks of age, beginning with black fur turning dull, dry, and frizzy. By six to nine months of age, progressive hair loss leaves the black patches patchy or completely bald, and the exposed skin can become dry, scaly, or irritated.
Treatment
There is no cure for the hair loss, but the condition has low clinical severity and does not affect overall health. Care is lifelong and involves gentle topical treatments, sun protection, and occasional therapies for secondary skin infections. Routine management and diagnostic costs typically range between €250 and €1,200.
How it's tested
Affected breeds
Treatment cost
Estimated range of typical treatment costs. Actual costs depend on severity, clinic and region.
Frequently asked questions
What is Black hair follicular dysplasia?
Black hair follicular dysplasia is an inherited, autosomal-recessive skin condition in which pigment clumps abnormally inside hair follicles. This structural flaw causes only black hairs to become brittle and break off, while lighter-colored coat sections continue to grow normally. Because there is no commercial DNA test, a veterinarian confirms the diagnosis through microscopic hair examination and a skin biopsy.
How is Black hair follicular dysplasia tested?
Various clinical and genetic tests are used depending on the breed and presentation.
Which breeds are most affected?
Most commonly affected: Finnish Hound (Suomenajokoira), Gordon Setter, Parson Russell Terrier.