Kawasaki disease: acute illness, primarily in children, characterized by a rash, swollen lymph glands, fever, inflammation of the mucous membranes of the mouth, and a "strawberry tongue", joint pain, pneumonia, meningitis, cardiac abnormalities, and aneurisms develop in some cases. The cause is unknown and diagnosis is difficult, based on the exclusion of all other known diseases. Treatment is largely symptomatic. Also called "Mucocutaneous lymph node syndrome.