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A subclavicular dark‐red patch with recent spontaneous hemorrhage and severe pain in a 24‐year‐old woman

An otherwise healthy 24-year-old Chinese woman presented with a 5-year history of an asymptomatic, slowly growing, dark-red patch over the right subclavicular region. The patient reported that the lesion initially did not cause any discomfort. It had not changed in size until she had noted the development of two black “spots” on the patch two months prior to presentation. The lesion subsequently became painful and tender. She denied any past trauma to the area, and there was no history of a coagulation or connective tissue disorder.