Malar flush is a plum-red discolouration of the high cheeks.
It is classically associated with mitral valve stenosis due to the resulting CO2 retention and its vasodilatory effects.
Malar flush is a plum-red discolouration of the high cheeks.
[1] Mitral valve stenosis may cause malar flush due to CO2 retention, which causes vasodilation of arterioles in the cheeks.
[1] It can also be associated with other conditions, such as lupus,[2] polycythemia vera[3] and homocystinuria.