Pityriasis versicolor (formerly tinea versicolor) is a common superficial yeast infection of the skin characterized by multiple scaling, oval, and patchy macular lesions usually distributed over upper portions of the trunk, proximal areas of the arms, and neck. Facial involvement particularly is common in children. Lesions may be hypopigmented or hyperpigmented (fawn colored or brown). Lesions fail to tan during the summer and during the winter are relatively darker, hence the term versicolor . Common conditions confused with this disorder include pityriasis alba, postinflammatory hypopigmentation, vitiligo, melasma, seborrheic dermatitis, pityriasis rosea, and dermatologic manifestations of secondary syphilis.
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