COVID-19 Dermatological Manifestations: Results from the Mexican Academy of Dermatology COVID-19 Registry

The study aimed to describe dermatological manifestations of COVID-19 in Mexico, based on data from a national registry established by the Mexican Academy of Dermatology. Between July 9, 2020, and December 7, 2020, 164 cases were reported, with 73.3% being women and the most common age range being 31-40 years. Of these cases, 52.4% had a confirmed PCR test, while 5.5% had positive serum antibodies. The most common skin manifestations were urticaria (24.4%), maculopapular eruptions (23.2%), and varicella-like eruptions (15.2%). Less common were enanthema (7.9%) and pernio-like eruptions (6.7%). The study also noted unusual presentations such as palmar erythema and elbow/knee erythema. The findings suggest that skin manifestations like enanthem and alopecia (including telogen effluvium and alopecia areata) are increasingly associated with COVID-19. The study highlights the importance of national registries in understanding COVID-19's dermatological impact and suggests that the specific type of alopecia warrants further study. Limitations of the study include a significant number of cases with unspecified diagnostic tests and lack of data on temporality and skin symptom duration.