What is Telogen Effluvium? Excessive hair shedding is a typical characteristic of telogen effluvium, which occurs when a significant number of hair follicles simultaneously transition into the resting phase of the hair growth cycle. This disruption leads to increased hair shedding and a noticeable thinning of the hair. What’s the Difference between Acute Telogen Effluvium and Chronic Telogen Effluvium? Acute