What is the minimum duration of fever required for a diagnosis of Kawasaki disease?

Kawasaki disease is a systemic vasculitis that primarily affects children and is characterized by a prolonged fever and a range of other clinical features. The minimum duration of fever required for a diagnosis of Kawasaki disease is five days. This criterion is important because it helps differentiate Kawasaki disease from other febrile illnesses, ensuring that children who present with a prolonged fever of less than five days are not misdiagnosed.

In addition to the fever lasting for at least five days, the diagnosis typically requires the presence of other clinical signs, such as conjunctival injection, rash, lymphadenopathy, changes in the lips and oral cavity, and palmoplantar erythema or desquamation. Recognizing the specific criteria helps clinicians effectively identify Kawasaki disease and initiate appropriate management to prevent potential complications, such as coronary artery aneurysms.

In summary, the five-day duration of fever is a crucial part of the diagnostic criteria for Kawasaki disease, emphasizing the importance of understanding the clinical presentation for accurate diagnosis and treatment.