Telogen Effluvium After COVID-19 Infection: A Narrative Review of the Physiological Mechanism

The document is a narrative review exploring the occurrence of Telogen Effluvium (TE), a form of temporary hair loss, in relation to SARS-CoV-2 infection. The authors aim to identify and explain the mechanism of post-COVID-19 TE, questioning whether it is similar to that observed in other infections as a response to stress from feverish episodes, or if the COVID-19 infection directly affects hair follicles. They also consider whether hair loss is due to a combination of factors such as cytokines, medications used during treatment (antivirals, antibiotics, steroids, anticoagulants, etc.), the psychological impact of the infection, and the environmental stress of the pandemic and associated quarantine restrictions.