Acute Versus Chronic Telogen Hair Loss: A Review of the Knowledge and Recent Facts

June 2024 in “ Al- Anbar Medical Journal ”

Thamir Kubaisi

telogen effluvium TE non-scarring diffuse scalp hair loss hair shedding acute TE chronic TE hair pull test clip test trichoscopy modified wash test post-hair transplantation vitamin D deficiency COVID-19 hair loss hair transplant vitamin D COVID

TLDR Acute telogen effluvium can be resolved by addressing causes, but chronic telogen effluvium is harder to treat.

Telogen effluvium (TE) is a non-scarring diffuse scalp hair loss condition, with hair shedding ranging from 150 to over 400 hairs per day, particularly concerning for women. The review discusses the mechanisms, causes, clinical types, diagnostic tools, and treatments for TE. Acute TE can often be resolved by addressing the causative factors, while chronic TE presents a more challenging treatment scenario. Diagnostic methods include the hair pull test, clip test, trichoscopy, and modified wash test. New causes of TE include post-hair transplantation, vitamin D deficiency, and COVID-19. Treatment options for chronic TE remain limited and vary in effectiveness.

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