Sweet itch is a debilitating allergic skin condition affecting horses worldwide, caused by hypersensitivity to Culicoides midge bites. Emerging immunotherapy approaches offer hope beyond symptom management.
Sweet itch causes profound welfare suffering that is often underestimated. Affected horses can rub themselves to the point of creating open wounds, lose sleep due to constant irritation, and show behavioral changes including aggression and depression during peak midge season. The condition significantly reduces quality of life for months each year. Current management is labor-intensive and imperfect - fly rugs must be worn continuously, restricting natural behavior. Immunotherapy, if proven effective, would represent a transformational welfare improvement by addressing the underlying sensitization rather than just symptoms. Horse owners should work with veterinary dermatologists to develop comprehensive management plans, and report any worsening to rule out secondary bacterial infection.