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  • COVID-19 and dermatology
    Das, Anupam

    Indian journal of dermatology, 05/2021, Letnik: 66, Številka: 3
    Journal Article

    The skin is believed to act as a mirror of the underlying systemic pathologies. A gamut of cutaneous manifestations in the background of COVID-19 have been described, some of which have been “claimed” to be highly indicative of the disease. However, many of the reported manifestations could be explained by the “Baader–Meinhof phenomenon.” Also known as frequency illusion, Baader-Meinhof phenomenon is a cognitive bias in which, after noticing something for the first time, there is a tendency to notice it more often, leading someone to believe that it has a high frequency (a form of selection bias). COVID toes (presence of purple or bluish lesions on the patient's feet and toes) were reported from different parts of the globe as a specific sign of COVID-19 disease. However, in the subsequent months, this phenomenon or “epiphenomenon” has been reported from many other centers. I believe that it is difficult to qualify COVID toes as a direct manifestation of the disease because the rate of the COVID-19 antigen test positivity among the affected patients has been found to be low.3 Akin to other viral infections, some of the frequently reported cutaneous manifestations include morbilliform rash, urticaria, erythema multiforme like lesions, and others. In the pediatric population, one interesting condition (multisystem inflammatory syndrome in children) is being increasingly reported; wherein the cutaneous manifestations have been found to simulate Kawasaki disease.4