A review study about causes of telogen effluvium hair loss after covid۱۹

Background: Covid-۱۹ is an acute respiratory syndrome and a systemic infection that causes significant sideeffects in different parts of the body. One of these side effects of hair loss is telogen effluvium, which affectsless than half of the hair. Therefore, the current study was designed with the aim of investigating the causes oftelogen effluvium hair loss after covid-۱۹.Methods: The present study was a review study designed in ۲۰۲۲. The search was conducted in internationaland national databases, including Scientific Information Database (SID), PubMed and Scopus, using thefollowing keywords: “Telogen effluvium”, “Covid-۱۹” and “Hair loss”. Summaries of articles published incongresses and conferences were excluded from the study. Initially, ۱۱ articles in English or Persian were finallyevaluated.Results: By reviewing various studies, it was found that telogen effluvium is caused by stimulatory factors suchas fever-related diseases, severe infection, and nutritional deficiencies, all of which are common in COVID-۱۹patients. It has also been found that the covid-۱۹ virus can intensify hair loss by affecting the proteases of themembrane of some cells and disrupting the androgenic pathways. In another study, it was found that contractingcovid-۱۹ is followed by the use of certain drugs and stress, and these factors also play a role in the occurrenceof telogen effluvium.Conclusion: Generally, the review of various studies showed that telogen effluvium hair loss is one of thecomplications of covid-۱۹, which is affected by various factors. Therefore, this complication can be preventedto some extent by following a suitable nutritional diet during the period of covid-۱۹ infection and reducingstress.