Legacy of a day in the sun

Just one sunburn caused all these freckles to arise on her skin. It serves as a reminder of how little sun exposure is required to cause permanent damage to skin. These pigmented lesions are better described as lentigines because the melanocytes now continue to make melanin irrespective of ongoing sun exposure. Freckles by contrast fade in the winter months. The clinical differential for this would be a speckled lentiginous naevus, but it followed a definite sunburning episode. 

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