If different areas of your skin are appearing to be of a different colour, then you might be suffering from pityriasis versicolour or tinea versicolour. This is a fungal skin infection which is caused by a yeast which dwells on the skin. The skin disease appears as a rash when the yeast grows out of control. The patches which develop may be pink, white, red or brown in colour and are usually lighter or darker than the surrounding skin.
The infection can take place because of the following reasons:
This condition is capable of affecting people of any skin colour, although it is more common in teens. Tinea versicolour is not contagious as the yeast grows on the skin naturally.
Tinea versicolour is diagnosed by a doctor based on the rash and how it looks like. Ultraviolet (UV) light is sometimes used for diagnosis. This makes the affected areas of the skin appear fluorescent yellow-green, if they caused due to tinea vesicolour. A skin sample is also taken by scraping the skin and scales from the affected area. This is observed under a microscope. In case of children, the skin cells are lifted off by attaching a clear tape to the affected region and then removing it. The sample is then studied under a microscope for proper diagnosis.
The treatment of tinea versicolour helps in eliminating the fungal infection. It might take several months to resolve the discolouration of the skin.
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