Chilblains unrelated to COVID-19 infection, 2 studies concludeChilblains—which in this pandemic have been referred to as "COVID toes"—are not a sign of COVID-19 infection but rather a result of sedentary lifestyles linked to community lockdown measures and a lack of warm footwear, two small studies published today in JAMA Dermatology have found.In a study involving 31 patients with chilblains, 11 of them teenagers, from Apr 10 to 17 at a Brussels hospital, none tested positive for SARS-CoV-2, the virus that causes COVID-19, on reverse-transcription polymerase chain reaction (RT-PCR) or had antibodies against the virus on serologic testing.Biopsies of 22 skin samples showed no evidence of the virus.