Malar flush is a plum-red discolouration of the high cheeks. It is classically associated with mitral valve stenosis due to the resulting CO<sub>2</sub> retention and its vasodilatory effects. It can also be associated with lupus, polycythemia vera and homocystinuria.
Malar flush is a plum-red discolouration of the high cheeks.
Mitral valve stenosis may cause malar flush due to CO<sub>2</sub> retention, which causes vasodilation of arterioles in the cheeks.
It can also be associated with other conditions, such as lupus, polycythemia vera and homocystinuria.