August 2023 in “Iranian Journal of Clinical Infectious Diseases” This study observed a variety of skin conditions related to COVID-19 and its vaccines in a Brazilian setting, classifying them into five categories, including peri-infectious reactions and vaccine-related adverse effects, to aid physicians managing similar cases.
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January 2024 in “Journal of Community Medicine & Public Health” In this study, researchers observed that low-risk COVID-19 hospital staff experienced similar persistent symptoms for at least 30 days after discharge, suggesting the need for targeted monitoring and parameter indicators post-infection clearance.
October 2025 in “Journal of Pharmacy And Bioallied Sciences” In this observational study conducted at a tertiary care center, researchers found that post-COVID patients most commonly experienced telogen effluvium and other dermatological issues like herpes infection and acne, with middle-aged and female patients being predominantly affected.
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November 2020 in “International Journal of Dermatology” COVID-19 may cause a temporary hair loss condition called telogen effluvium in some patients after recovery.
November 2025 in “Preprints.org” This scoping review reports that while empirical evidence suggests an overlap between Long/Post Covid-19 syndrome, chronic fatigue syndrome, and fibromyalgia, the underlying molecular mechanisms remain unclear, highlighting the need for standardized definitions and rigorous methodologies in Long Covid research.