Tinea versicolor.

Tinea versicolor is one of the most common disorders of pigmentation in the USA and the world. It is a cutaneous, superficial fungal infection characterized by skin pigmentary changes due to colonization of the stratum corneum by a dimorphic lipophilic fungus in the normal flora of the skin known as Malassezia furfur.1,2 The yeast phase of this organism has two morphologically discrete forms: an ovoid form, Pityrosporum ovale, and a spherical form, Pityrosporum orbiculare. Tinea versicolor is also known as pityriasis versicolor and less commonly as dermatomycosis furfuracea, tinea flava, or achromia parasitica. It has a worldwide distribution, but is more common in the tropics due to the relative high temperature and humidity. Previously thought to be a post-pubertal disease, evidence has shown that tinea versicolor is not uncommon in children.1 Currently, advances are being made in the therapy of this infection as the focus shifts from topical to systemic antifungals.

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