Cutaneous onchocerciasis in the horse: five cases in southwestern british columbia.

The objective of the research was to explore the occurrence and treatment of cutaneous onchocerciasis, a skin condition, in horses in southwestern British Columbia. Five horses were examined and treated using levamisole therapy, with successful results indicating repeat therapy may be necessary.

Presentation of Dermatitis in Horses

• The research involved studying five horses that were brought in due to a dermatitis condition affecting their foreheads. Dermatitis in the forehead of these horses was the central focus, as this presented a contrasting symptomology compared to previous studies where ventral midline dermatitis, a skin inflammation along the belly line, was often reported.
• Interestingly, only two out of the five horses exhibited the typical ventral midline dermatitis. This observation further challenges the predominance of belly line dermatitis in the horse population, making this research stand out among the previous studies.

Treatment with Levamisole Therapy

• For the treatment of this dermatitis, all horses were subjected to Levamisole therapy, a type of medication used to treat parasitic worm infections. They were given daily doses of the drug at 5.5 grams for a duration of one week.
• The successful response to the Levamisole therapy was consistent in all five horses. However, the researchers caution that repeated therapy sessions might be needed. This need for repeat therapy implies that while Levamisole effectively manages the symptoms, it may not necessarily cure the condition.

Implications for Future Studies

• The findings of this study highlight the evolving nature of skin conditions like cutaneous onchocerciasis in horses. By shedding light on the variations in dermatitis presentation, it is possible to conduct more detailed future investigations to understand the range and mechanism of skin inflammation in horses.
• The study also brings to the fore the effective role of Levamisole therapy in managing the condition. Further research could explore the frequency and intensity of Levamisole therapy necessary for achieving long-term resolution of the dermatitis in the horse population.