Dots that do not blanch
A 34-year-old has four days of raised purple dots over both shins and ankles that stay put under a glass, plus joint pain after a recent chest infection.
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A 34-year-old presents with four days of a rapidly increasing crop of purple papules over the shins, ankles and buttocks, with arthralgia and an episode of abdominal pain, three weeks after a respiratory infection treated with amoxicillin.