The evaluation of tinea versicolor begins with a history and physical exam.

Physical findings in someone with tinea versicolor include:

• Rash:
• Patches of skin that may be lighter or darker than the surrounding skin
• Mild flaking of the skin

The diagnosis of tinea versicolor can usually be made without testing.

Tests that may be used to evaluate tinea versicolor include:

• Examination of the skin under an ultraviolet light
• Skin scraping:
• For examination under the microscope
• Skin biopsy