Introduction
Kikuchi–Fujimoto disease (KFD) or histiocytic necrotizing lymphadenitis is a rare and self-limiting benign disease.1 KFD is mostly seen in young adults before the age of 30 years with a female predominance,2 but in children, it is more common in boys.1 KFD is typically characterized by cervical lymphadenopathy, fever, and skin rash.3 The etiology of KFD is still unknown and it can lead to misdiagnosis with other diseases, including lymphoma, systemic lupus erythematosus, or hematological disorders.4 Although supportive therapy is usually enough for management of KFD,2 the misdiagnosis can impose patients to unnecessary diagnostic procedures and treatments. In this study, we present a case of Kikuchi-Fujimoto disease that was also positive for novel coronavirus disease 2019 (COVID-19).