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The secondary eruption in pityriasis rosea showing the 'Christmas tree pattern'.

The secondary eruption in pityriasis rosea showing the 'Christmas tree pattern'.

Source publication
Research
Full-text available
Background Pityriasis rosea is a scaly, itchy rash that mainly affects young adults and lasts for 2 to 12 weeks. The effects of many available treatments are uncertain. This is an update of a Cochrane Review first published in 2007. Objectives To assess the effects of interventions for the management of pityriasis rosea in any individual diagnosed...

Context in source publication

Context 1
... are similar to the herald patch but smaller. Their distribution commonly follows the skin cleavage lines in what is referred to as the 'Christmas tree pattern' (Figure 2). The rash usually occurs on the trunk and extends to the upper arms and upper thighs, rarely to the forearms and legs. ...