Recurrent episodes of a "purple chin" in an adolescent girl eluded definitive diagnosis for three years. The condition occurred premenstrually, but results of extensive tests failed to reveal any abnormal hormonal sensitivity. A diagnosis of factitial purpura was eventually established.
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Department of Physics, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
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Archaeology & Palaeoecology, School of Natural and Built Environment, Queen's University, Belfast BT9 3AZ, United Kingdom.
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Dept. of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA.
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