January 2025 in “Egyptian Journal of Dermatology and Venerology” This study found that COVID-19 vaccination initially lowered vitamin D levels in serum and hair but increased serum levels after the second dose, except for the Pfizer group. Hair vitamin D showed a nonsignificant increase, and hair loss was most common with the AstraZeneca vaccine.
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February 2022 in “The Journal of Dermatology” This case report suggests that the mRNA-1273 COVID-19 vaccine may induce systemic lupus erythematosus exacerbation, as observed in a 41-year-old woman who experienced worsened skin symptoms and other complications after vaccination.
January 2023 in “Yādgār.” This study found a significant relationship between COVID-19 vaccine injections and the occurrence of abnormal uterine bleeding, suggesting the need for more research on the vaccines' reproductive health effects.
May 2023 in “Indian Journal of Dermatology” In this study, researchers observed temporary skin reactions at BCG vaccination sites following the Pfizer-BioNTech COVID-19 mRNA vaccine in five patients, suggesting underreported occurrences.
January 2023 in “Zenodo (CERN European Organization for Nuclear Research)” This study reported that olive oil applications on the scalp may regenerate hair loss linked to SARS CoV-2 infection and vaccination, based on observations in two individuals.