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Eyebrow hair loss can occur due to multiple underlying causes, some of which are short-term and treatable, while others require professional intervention. One of the most common culprits is over-plucking. Frequent irritation to the hair follicles from harsh beauty routines can permanently weaken the follicles, resulting in complete absence in severe instances. Inflammatory skin issues such as psoriasis can inflame the eyebrow region, halting the natural hair growth cycle.

Another prevalent cause is autoimmune-mediated hair loss, a condition where the body’s antibody response destroys hair follicles, leading to focal thinning, often affecting the eyebrows. Thyroid imbalances—both underactive thyroid and hyperthyroidism—are strongly associated with brow recession, particularly the tail end of the brow, a hallmark sign of low thyroid function.

Micronutrient shortfalls can also contribute significantly. Deficiencies in key nutrients like protein can compromise hair follicle integrity, کاشت ابرو در شهریار triggering excessive hair loss. This pattern is frequently observed in individuals with post-illness recovery.

Hormonal shifts—such as those occurring during postpartum—can induce eyebrow hair loss as the body adjusts to new hormonal balances.

Certain medications—including blood thinners—may list follicular shedding as a common adverse reaction. Infections, especially ringworm, can invade the skin around the eyebrows, destroying follicles and preventing regrowth.

Physical trauma such as radiation exposure can permanently obliterate hair follicles in the affected zones, making regrowth impossible.

Emotional strain—including overexertion—can induce stress-induced shedding, a condition where hair growth cycles enter early a resting phase, leading to noticeable thinning in both eyebrows and scalp.

Finally, the natural aging process slows down hair growth rate and fine-tunes eyebrow density over time, resulting in lighter brows as we grow older.

If you experience noticeable asymmetry, it’s advisable to seek medical advice to determine the triggering factor and begin targeted interventions.