What is Telogen Effluvium? Telogen Effluvium is a temporary hair loss condition that arises when a significant number of hair follicles on the scalp enter the resting telogen phase simultaneously. It often follows a triggering event such as severe stress, childbirth, illness, or sudden weight loss. Affected individuals may notice an increase in hair shedding or thinning, usually several months after the trigger. The condition is typically self-limiting, with most people seeing a complete recovery of hair density within six to nine months without treatment. However, addressing the underlying cause and ensuring adequate nutrition can aid recovery.