The patient reports that the affected areas became red and started \”stinging\” approximately three weeks ago, accompanied by “some small blisters.” At the time, she attributed the symptoms to sunburn. Gradually, however, the areas evolved into darker \”bruises\” that have now been present for about two weeks.
She denies using any new products on her skin or clothing, or taking any new medications, supplements, or foods. She is otherwise healthy and in good spirits, having just returned from a trip to the Caribbean. On examination, you observe dark red/purple linear plaques and patches on her thighs, legs, and abdomen. The rest of the physical examination is unremarkable.
Examine the image and consider what your diagnosis might be.