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

Physical findings in someone with tinea corporis may include:

• Rash:
• Round, pink rings
• Raised, rough, and scaly border
• Some skin lesions may appear darker than the surrounding skin

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

Tests that may be used to evaluate tinea corporis include:

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