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A preliminary observation of high frequency of male pattern hair loss among admitted COVID-19 patients and suggest that androgen expression might be a clue to COVID-19 severity.

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Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website.Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre -including this research content -immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active. Fig 1. Purpuric skin rash in a patient with COVID-19 bilateral pneumonia, revealing purpuric, coalescing macules on (A) left and (B) right periaxillary regions.