For horses with severe sweet itch, allergen-specific immunotherapy offers a path beyond symptomatic management toward long-term reduction in allergic responses.
Sweet itch immunotherapy represents a significant advance in welfare for severely affected horses. Horses with extreme sweet itch that cannot be managed with rugs and stabling alone face a life of chronic, uncontrollable itching that causes open wounds, behavioral frustration, and inability to participate in normal activities. Immunotherapy addresses the underlying immune mechanism rather than just suppressing symptoms, offering the possibility of sustained improvement across multiple midge seasons. While not universally available and requiring significant owner commitment, ASIT is increasingly accessible through equine dermatology services. The welfare benefit for horses that respond is substantial - the difference between chronic suffering and manageable seasonal discomfort.