What is White Line Disease?
The white line is the area of the hoof where the sole and the hoof wall meet.
White line disease is an equine disease impacting the internal structure of the hoof. It is typically linked to infections. Progression of this disease can cause severe pain and lameness as the wall of the hoof breaks down.
White line disease happens when bacteria or fungi enter the hoof wall. It affects the white line area inside the hoof.
What Causes White Line Disease?
Any hoof wall defect, such as a crack or chip, can leave a horse vulnerable to developing white line disease. When the hoof is weak, bacteria or fungi can invade the hoof, causing serious damage.
What are the Symptoms of White Line Disease?
At first, owners will only notice physical symptoms around the infected hooves. However, severe symptoms can develop over time. Owners should watch for:
-
Darkening along the white line
-
Crumbly hoof wall
-
Sensitivity
-
Lameness
-
Pain
Visual Symptoms in the Hoof
The clearest sign of white line disease is when the white line separates and starts to break apart. This is the area where the hoof wall connects to the sole. During intermediate stages, it may appear dark, crumbling, or hollow. You may notice the classic signs of infection. Cracks, holes, or gaps may exhibit signs of infection, such as pus, and emit a foul odor.
Behavioral Changes in Horses
Horses in the severe stages of white line disease will also exhibit behavioral changes. Not only will you see signs of pain or discomfort, but you could also see signs of lameness or an uneven gait. With increased pain, you may also notice a reluctance to move, walk on hard surfaces, or general irritability.
What are the Risk Factors of White Line Disease?
Horses that suffer from white line disease are typically found in unsanitary conditions. They are kept in dirty and often wet environments. Horses that spend too much time in damp, muddy, or manure-filled stalls are exposed to a lot of bacteria. Additionally, horses with poor hoof care, irregular trimming, or trauma can develop white line disease.
Diagnosis and Assessment
Owners need to be aware of the symptoms of white line disease; however, it requires a trained veterinarian to fully diagnose and treat the disease. It can be challenging to discern white line disease from other hoof conditions. A veterinarian will perform a physical exam of the hoof, listen to the patient's history, and inspect living conditions.
To diagnose white line disease, the vet closely examines the hoof. This helps determine how far the infection has spread and checks for other hoof problems. Accurate diagnosis involves a combination of clinical evaluation and imaging techniques. When necessary, your veterinarian may order blood work, X-rays, or microbiological analysis.
Treatment Strategies for White Line Disease
For early cases of white line disease, we see effective results with the trimming of the hoof to remove fungal or bacterial infection. Additionally, antifungals or antibiotics can be effective. Farriers and veterinarians can combine their expertise to treat and trim hooves to protect them. With corrective trimming, the hoof can heal and stop the spread of infection.
