The evaluation of age spots begins with a history and physical examination.

Physical findings in those with age spots may include:

• Skin lesions:
• Brown or black
• Smooth
• Even with the surface of the surrounding skin
• Entire lesion is one color
• Fine wrinkles
• Usually less than 1/4 inch (5 mm) in diameter
• Usually round or oval

Usually, testing is not necessary to make the diagnosis of age spots.

Testing for age spots may include:

• Skin biopsy