Toad's disease in horses: Diagnosis, tissue degradation, and therapeutic innovations

Toad's disease, or chronic hypertrophic pododermatitis (CHPD), is a complex condition of the equine foot that requires careful attention from owners and veterinarians. This article explores in detail the signs of tissue breakdown associated with this disease, as well as the advantages and disadvantages of surgery and the growing interest in ozone treatments.

Signs of tissue breakdown

Tissue breakdown in toad's foot develops gradually and can affect different parts of the horse's hoof. Here are the main signs to watch for:

Alterations of the fork

The fork is usually the first area affected by toadstool disease. Signs of deterioration include:

1. Appearance of a pale growth: A mass of abnormal tissue is often observed near the base of the frog, with well-defined edges.
2. Abnormal texture and color: The affected tissue has very fragile pink granulation, contrasting with the normal texture of the frog.
3. Cauliflower formation: Abnormal keratin production creates growths resembling a cauliflower.
4. Increased fragility: The injured tissue bleeds easily to the touch, indicating an alteration of its normal structure.

Progression towards other structures

If the disease is not treated quickly, it can spread beyond the range:

1. Involvement of the bulbs: The sensitive tissues under the frog can be affected, increasing pain and lameness.
2. Sole alteration: The sole may become dull and greyish, indicating progression of the infection.
3. Horn detachment: In advanced cases, horn detachment may be observed, compromising the structural integrity of the hoof.

Signs of infection and inflammation

Tissue breakdown is often accompanied by signs of infection:

1. Whitish exudate: A discharge resembling cottage cheese is often present on affected tissues.
2. Foul odor: A characteristic unpleasant odor emanates from the affected hoof.
3. Increased sensitivity: The tissue becomes very sensitive to touch, causing pain and possible lameness in the horse.

Advanced complications

In severe cases, tissue breakdown can lead to:

1. Foot destruction: The soft tissues can detach from the hoof capsule, seriously compromising the structure of the foot
2. Involvement of the hoof wall: The infection can spread to the hoof wall, significantly worsening the prognosis.

Surgery: advantages and disadvantages

Faced with the progression of toadstool disease, surgical intervention is often necessary. Let's examine the advantages and disadvantages of this approach.

Advantages of surgery

1. Effective removal of diseased tissue: Surgical debridement allows for the careful removal of all abnormal tissue, offering a better chance of healing.
2. Direct visualization: The veterinarian can examine in detail the extent of the infection and ensure the complete removal of affected tissues.
3. Basis for targeted treatment: The procedure creates a clean surface for the application of post-operative topical treatments.
4. Preventing spread: Removing infected tissue reduces the risk of the disease spreading to other parts of the foot.

Disadvantages and risks of surgery

1. Risks related to anesthesia: Depending on the extent of the procedure, general anesthesia may be necessary, which carries its own risks.
2. Recovery period: Healing time can vary from two weeks to several months, requiring intensive care and limiting the horse's activity 5 .
3. Risk of recurrence: Despite careful intervention, recurrences are frequent, sometimes requiring repeated interventions.
4. Cost: Surgical procedures and post-operative care can represent a significant financial investment.
5. Post-operative pain: The horse may experience discomfort during the healing period, requiring careful pain management.

The benefits of ozone treatment

Faced with the challenges posed by conventional treatments, ozone therapy is emerging as a promising alternative in the treatment of toad disease.

Principles of ozone therapy

Ozone therapy uses ozone, a triatomic form of oxygen, for its therapeutic properties. In the context of toadstool disease, it offers several advantages:

1. Powerful antimicrobial effect: Ozone is effective against 99% of known pathogens, making it an excellent tool for combating underlying infection.
2. Stimulation of healing: Ozone promotes tissue regeneration, potentially accelerating the healing process.
3. Reduction of inflammation: The anti-inflammatory properties of ozone may help relieve the pain and discomfort associated with the disease.

Application methods

Ozone therapy for the treatment of toad infestation can be administered in several ways:

1. Bagging : This technique involves wrapping the affected foot in a bag filled with ozone gas, allowing for direct and prolonged application.
2. Topical application of ozonated oil: Ozonated oil can be applied directly to affected tissues, providing continuous antimicrobial action.

Advantages of ozone treatment

1. Non-invasive approach: Unlike surgery, ozone therapy does not involve invasive procedures, reducing risks and stress for the horse.
2. Reduction in antibiotic use: The antimicrobial effect of ozone can decrease the need for antibiotics, thus limiting the risk of bacterial resistance.
3. Potentially reduced treatment time: Some studies report cures in just 13 days of hospital care with ozone therapy.
4. Versatility: Ozone therapy can be used alone or in addition to other treatments, including after surgery.
5. Minimal side effects: Compared to conventional treatments, ozone therapy generally has fewer side effects.

Considerations and limitations

Despite its promising advantages, the use of ozone therapy in the treatment of toad disease requires certain precautions:

1. Need for specialized equipment: Ozone administration requires specific equipment in the form of a boot called a bagging device.
2. Lack of standardization: Treatment protocols can vary, complicating the evaluation of their effectiveness on a large scale. For any specific protocol, please contact us .
3. Need for further research: Although promising, the results of ozone therapy in the treatment of toads require more clinical studies to confirm its long-term effectiveness.

Conclusion

Toadstool disease in horses presents with complex and potentially serious signs of tissue breakdown. Early recognition of these signs is crucial for effective treatment. While surgery remains an important treatment option, it carries significant risks and drawbacks. The emergence of ozone therapy offers a promising alternative, combining antimicrobial efficacy, wound healing stimulation, and inflammation reduction. This non-invasive approach could revolutionize the treatment of toadstool disease, potentially offering shorter healing times and fewer side effects. However, it is important to emphasize that each case of toadstool disease is unique. An individualized treatment approach, potentially combining surgery, ozone therapy, and supportive care, remains essential for achieving the best possible outcomes. Close collaboration between owners, veterinarians, and farriers remains key to the successful management of this complex equine foot condition.