Editing Malar rash (section)

{{short description|Red, scaly rash of the cheeks and bridge of the nose}}
{{More citations needed|article|date=December 2020}}
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| caption         = A malar rash, or "butterfly rash", is characteristically red or purplish and mildly scaly (seen in patients with systemic lupus erythematosus).
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A '''malar rash''' ({{ety|la|mala|jaw, cheek-bone}}), also called '''butterfly rash''',<ref name=":0">{{cite book | vauthors = Nouh A, Speiser J, Biller J | chapter = Chapter 3 - Acquired neurocutaneous disorders|date=2015-01-01 | title = Handbook of Clinical Neurology|volume=132|pages=29–73| veditors = Islam MP, Roach ES |series=Neurocutaneous Syndromes |publisher=Elsevier |doi=10.1016/b978-0-444-62702-5.00003-2 | pmid = 26564070| isbn = 9780444627025}}</ref> is a [[medical sign]] consisting of a characteristic form of facial [[rash]]. It is often seen in [[lupus erythematosus]]. More rarely, it is also seen in other diseases, such as [[pellagra]], [[dermatomyositis]], and [[Bloom syndrome]].

Many conditions can cause rashes with a similar appearance to a malar rash.<ref name=":0" /> A malar rash is present in approximately 46–65% of people with lupus.