A patient with tinea versicolor not uncommonly exhibits during the summer or autumn light-colored (apparently depigmented) areas on the surfaces of skin exposed to sunlight. These areas usually appear suddenly, after sunburn followed by peeling, although a history of a visible reaction is not always obtained. The patches occupy the sites of lesions of tinea versicolor, being irregular and of various size, and appear chiefly on the trunk. Their color is not the dead white of vitiligo, although in contrast to the surrounding skin, especially in persons of dark complexion, they may be mistaken for that disease. Other areas of skin on the covered parts of the body are usually found to match the color of the achromic-appearing spots. There is no increase of pigment at the periphery of the lesions. A scarcely perceptible scaling may be noted. Sometimes the condition appears year after year, becoming less noticeable during