Kikuchi-Fujimoto disease (KFD) is a disease which goes with fever, leucopenia and cervical lymphadenopaty; and generally self-limited in several weeks to months. Recurrences are seen in 3% of the cases. It is also called histiocytic necrotizing lymphadenopaty. The patients suffer from this disease can be misdiagnosed such as tuberculosis, systemic lupus erythematosus, lymphoma. Therefore, the diagnosis of this disease which have usually benign prognosis but rarely fatal, gains importance. We want to discuss this rare, hard to diagnose and as much important disease, while presenting our two patients with KFD who are 32- and 39-year-old.