hanging curtain sign
hanging curtain signA clinical finding in the medallion lesion (a red, scaly patch) of patients with pityriasis rosea, which is evoked by stretching the skin across the long axis: the scales—being finer, lighter and attached at one end—tend to fold across the line of force (stretching). The resulting appearance has been fancifully likened to that of a hanging curtain that is similarly attached at one end by a cord and falls in folds at its long axis due to gravitational force.
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