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Anosmia has been noticed in leukoderma and allied disturbances of pigmentation.

The "leopard-boy of Africa," so extensively advertised by dime museums over the country, was a well-defined case of leukoderma in a young mulatto, a fitting parallel for the case of ichthyosis styled the "alligator-boy."

Figure 293 represents a family of three children, all the subjects of leukoderma.

Wood calls attention to the wave-like course of leukoderma, receding on one side, increasing on the other.

Partial albinism, necessarily congenital, presenting a piebald appearance, must not be confounded with leukoderma, which is rarely seen in the young and which will be described later.