Is Kawasaki disease serious?

Patient's question:

Today I called my best friend to ask her out for dinner and to go shopping, but she said her child was sick. She took them to the hospital, and they said it was Kawasaki disease. Now she's taking care of her child. I've never heard of this disease before. What is Kawasaki disease? Is it serious?

Doctor's answer:

Kawasaki disease refers to an acute, exanthematous childhood illness characterized primarily by systemic vasculitis. It is more common in children under the age of 5, with boys being affected more frequently than girls. This disease presents with certain clinical diagnostic symptoms, such as recurrent fever, diffuse congestion of oral mucosa, and strawberry tongue with palmar erythema, among others. With active treatment, the prognosis is generally favorable, so there is no need to worry excessively.

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