Some patients may develop hair loss following COVID-19.

Mechanism: possible telogen effluvium, possible alopecia areata, possible other


Clinical features:

(1) confirmed episode of COVID-19

(2) onset of alopecia from after the onset of COVID-19 to 60 days after recovery

(3) exclusion of other causes of alopecia


Risk factors:

(1) longer disease duration (> 10 days)

(2) severe symptoms (fever, myalgia, dyspnea, etc)

(3) trichodynia

(4) female sex

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