Patients with tinea versicolor (TV) may complain of mild pruritus. Because the organism, Malassezia furfur, needs a warm, moist area high in lipids, TV often occurs in the warmer months or during the winter among patients who engage in vigorous exercise causing sweating. TV generally does not appear before puberty. It is characterized by sharply demarcated hyperpigmented or hypopigmented scaling patches on the trunk, neck, and proximal areas of the arms (Fig. 24-1). It is called “versicolor” because the coloring can be whitish, brownish, or even reddish, depending on the normal color of the patient’s skin. The lesions give a fine, bran-like scale with minimal scratching. Patients are frequently not aware of the condition until they are suntanned and the hypopigmentation caused by TV becomes more noticeable.