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).