Covid-19 Associated Hair Fall

The COVID-19 pandemic has introduced a wide array of clinical consequences beyond respiratory symptoms. Among these, hair fall has emerged as a significant post-viral manifestation. A growing number of recovered patients report hair shedding several weeks to months following infection. This paper systematically reviews and analyzes available literature, clinical reports, and observational studies from 2020 to 2024 that explore the link between COVID-19 and hair loss. The most common form is telogen effluvium (TE), triggered by physical stress (fever, infection), psychological trauma, and post-inflammatory cytokine changes. TE typically begins two to three months after infection and persists for up to six months. In some patients, androgenetic alopecia or alopecia areata are also worsened post-COVID. The study also explores the role of nutritional deficiencies, immune dysregulation, and medication side effects. Diagnostic tools such as trichoscopy, blood tests for micronutrient deficiencies, and scalp biopsies are reviewed. Treatments used include topical minoxidil, micronutrient supplements (zinc, vitamin D, biotin), and psychological support. Evidence from 20 peer-reviewed studies is summarized to determine patterns, causes, and best practices for managing this condition. This review aims to support dermatologists in understanding, diagnosing, and managing post-COVID hair fall effectively. It also highlights areas for future research, including long-term prognosis and the efficacy of therapeutic options.