Urinary capillariosis as an overlooked cause of severe chronic pollakiuria in a dog

A young female dog presented with a several‐month history of marked pollakiuria and intermittent haematuria. Repeated urinalysis and ultrasonographic evaluation of the urinary tract failed to identify an underlying cause. Despite empirical antibiotic and anti‐inflammatory therapy clinical signs persisted. Therefore, cystoscopy was performed. This revealed small, filamentous parasites attached to the urinary bladder mucosa, raising suspicion of parasitic cystitis. A definitive diagnosis was achieved through identification of Capillaria plica ova on sediment evaluation. Treatment with fenbendazole and imidacloprid‒moxidectin was initiated. The patient showed a rapid and complete response to this multimodal treatment.