25.8 MB (2.0 MB compressed)
2480 x 3641 pixels
21.1 x 30.7 cm ⏐ 8.3 x 12.1 in (300dpi)
DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
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Pityriasis versicolor. Pityriasis versicolor causing patches of light skin on the back of a 17- year-old girl. This common skin disease, also called tinea versicolor, is caused by unusual proliferation of a yeast-like fungus Malassezia furfur that normally exists unnoticed on human skin. Climatic factors or sunlight are thought to trigger the condition, which is most common in young and middle-aged men, and is not contagious. Treatment consists of regularly applying an antifungal cream all over the upper body and washing clothing rigorously. This usually removes the fungus but the spots can take months to return to their normal colour.
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