Filariasis is a parasitic condition in which the lymphatic system is invaded by filarial nematodes. The initial signs are those of lymphangitis and lymphadenitis. The manifestations include edema in the extremities and elephantiasis due to lymphatic obstruction. Filariasis is endemic to most parts of the world, but occurs only sporadically in Turkey. This report describes a case of filariasis in a child who presented with fever and extensive lower-extremity edema.