Telogen Effluvium: A Common Hair Loss Condition

In 2012, a document detailed Telogen Effluvium (TE), a common hair loss condition triggered by factors such as stress, illness, or hormonal changes, where a large number of hairs prematurely enter the resting phase of the hair cycle. Clinically, TE may not be evident until hair density is significantly reduced, often requiring a loss of over 25% for detection. Histologically, TE is marked by an increased proportion of hairs in the telogen phase without a decrease in total hair count and lacks significant inflammation or follicle miniaturization. Chronic TE, which persists for over 6 months, is diagnosed after excluding other causes. Treatment involves addressing the underlying cause, with iron supplementation not shown to be effective in all cases and topical minoxidil potentially aiding regrowth but causing initial shedding. The document also highlights the importance of differentiating TE from other hair loss disorders, noting that it can sometimes reveal the early stages of androgenetic alopecia or be confused with conditions like alopecia areata.