Kikuchi-Fujimoto disease following COVID-19 in a 32-year-old woman.

not associated with COVID-19, with the exception of three cases showing uncommon complications, including heart involvement, generalized lymphade-nopathies, and multisystem inflammatory syndrome. 7,8,10 All but two cases showed complete resolution of clinical symptoms. In one case, cardiac function remained reduced, although whether the heart involvement was associated with KFD or COVID-19 remained unclear. 7 In another case, the clinical course was not documented. 12 Viral particles have never been identified ultrastructurally in the lymph nodes of patients with KFD. The present case and a previous case also did not demonstrate SARS-CoV-2 immunohistochemically. 5 Differential diagnoses for patients with cervical lymph-adenopathy following COVID-19 should include KFD to avoid unnecessary therapeutic interventions, particularly in patients under 40 years old. Further study regarding the relationship between KFD and COVID-19 is necessary.