As adjectives the difference between scurfy and scurvy
is that
scurfy is covered with scurf while
scurvy is covered or affected with scurf or scabs; scabby; scurfy; specifically, diseased with the scurvy.
As a noun scurvy is
a disease caused by insufficient intake of vitamin C leading to the formation of livid spots on the skin, spongy gums, loosening of the teeth and bleeding into the skin and from almost all mucous membranes.