Ivermectin in the treatment of Physaloptera preputialis in two cats

Two mixed-breed cats were examined for intermittent vomiting of several months' duration. Adult Physaloptera preputialis nematodes were detected in the vomitus and melena was observed in both cases. Clinicopathological abnormalities including anemia and eosinophilia were found in one case. Clinical signs resolved following anthelmintic therapy with ivermectin (200 micrograms/kg body weight) administered subcutaneously.