Derm Dx: Symmetrical brown hypermelanosis on the cheeks, forehead, nose and chin

A 25-year-old Hispanic woman presents to the dermatology clinic in the spring with a symmetrical brown hypermelanosis on the cheeks, forehead, nose and chin. The macular lesions have serrated, irregular and geographic borders.

History reveals no other symptoms, but the patient reports spending time outside gardening. What’s your diagnosis?

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