Abstract
IgA vasculitis (IgAV) is a small-vessel vasculitis common in children but rare in adults. It is usually an auto-limited disease in children but has a more severe course and worse prognosis in adults. The classical manifestations are non-thrombocytopenic purpura, arthralgias, gastrointestinal involvement and renal involvement. Herein we report a case of a 39-year-old man with a rash of the lower limbs associated with testicular and lower abdominal pain. The initial study revealed increased inflammatory biomarkers and enlarged left testis with bilateral ischemic areas on doppler ultrasound. A cutaneous biopsy later revealed leukocytoclastic vasculitis, confirming the diagnosis of IgAV with scrotal involvement. The patient started prednisolone, with improvement in the first week and sustained remission after two years of follow-up. This case report describes an adult with IgAV and scrotal involvement, which is rarely reported in adults and appears to be different from the one in children. The prevalence of scrotal involvement is presumably underestimated. In all men with IgAV, a scrotal examination should be performed and ultrasonography accordingly since it affects the treatment and follow-up. Recommendations for IgAV diagnosis and treatment in adults are still lacking and more research is needed.