Histiocytic necrotizing lymphadenitis, or Kikuchi's disease, is a self-limiting cervical lymphadenitis of unknown origin. Since no specific treatment has been reported for Kikuchi's disease to date, once a diagnosis of Kikuchi's disease has been established, the role of the physician has been limited only to treating the symptoms. Sometimes, however, the clinical manifestations of the disease can be very distressing for the patients. Thus, a more aggressive form of treatment may be required for the patients who suffer from severe and persisting symptoms and recurrence. We present three cases of Kikuchi's disease that benefited significantly from systemic administration of prednisone.