Kawasaki disease was first described from Japan in 1967. Most of the patien
ts reported have been under 3 years of age. We are reporting a typical case
of Kawasaki disease in an adult Yemeni male, who had all criteria for diag
nosis. Additionally our patient had tricuspid regurgitation as well as tric
uspid valve endocarditis, which is only rarely reported in literature. We a
lso noted a rise in monocyte and eosinophil count up to 10%, which may have
pathophysiologic significance in this disease. At two year follow up our p
atient had persistent right bundle branch black which he had developed duri
ng the course of his illness. Mortality of the disease is related to cardia
c complications especially coronary arteritis: and aneurysms in children. I
n adults too once diagnosis is established patients should be followed for
a long period of time to look for any possible cardiac complications.