Telogen Effluvium: Diagnosis & Treatment Online

Telogen effluvium is a common form of diffuse hair shedding that occurs when a significant number of hair follicles prematurely enter the telogen (resting) phase simultaneously. Unlike androgenetic alopecia, which follows a predictable pattern, telogen effluvium causes widespread thinning across the entire scalp. It is typically triggered by a physiological or emotional stressor and is usually reversible once the underlying cause is addressed.

This condition affects both men and women, though it is more frequently diagnosed in women. Common triggers include major surgery, severe illness, significant weight loss, childbirth, hormonal changes, nutritional deficiencies (particularly iron and vitamin D), and periods of intense psychological stress. The hallmark of telogen effluvium is that the shedding typically begins 2-3 months after the triggering event, as hair follicles that entered the resting phase begin to release their hairs simultaneously.

While telogen effluvium often resolves on its own within 6-9 months, medical intervention can accelerate recovery and rule out other conditions that may require different treatment. Our EU-licensed physicians at hi-doctor.ai specialize in differentiating telogen effluvium from other forms of hair loss and creating targeted treatment plans to support faster regrowth.

Telogen effluvium occurs when the normal hair growth cycle is disrupted by a stressor, causing a disproportionate number of follicles to shift from the anagen (growth) phase into the telogen (resting) phase. Normally, about 85-90% of scalp hairs are in anagen and 10-15% are in telogen. During telogen effluvium, up to 30% or more of hairs may enter the telogen phase.

Common triggers include: physical stress (major surgery, serious illness, high fever, significant trauma), emotional stress (bereavement, job loss, relationship breakdown), hormonal changes (postpartum, discontinuation of oral contraceptives, thyroid disorders), nutritional deficiencies (iron deficiency, vitamin D deficiency, protein malnutrition, crash dieting), medications (certain antidepressants, beta-blockers, retinoids, anticoagulants), and chronic conditions (autoimmune diseases, chronic infections).

In chronic telogen effluvium, which persists beyond 6 months, multiple overlapping triggers or an ongoing stressor may be responsible. Identifying and addressing the root cause is essential for effective treatment.

The primary symptom of telogen effluvium is a noticeable increase in daily hair shedding—patients often report finding large clumps of hair on their pillow, in the shower drain, or on their hairbrush. While normal daily shedding is approximately 50-100 hairs, individuals with telogen effluvium may lose 200-300 or more hairs per day.

Unlike pattern baldness, telogen effluvium does not cause a receding hairline or bald patches. Instead, it produces diffuse thinning across the entire scalp, which may be most noticeable at the temples and top of the head. When pulling gently on a section of hair, more than 10% of hairs coming out easily (a positive "hair pull test") is a strong indicator.

The condition typically becomes apparent 2-3 months after the triggering event, which can make identifying the cause challenging. Hair that is shed has a characteristic club-shaped white bulb at the root, distinguishing it from hair that breaks mid-shaft due to damage.

Treatment for telogen effluvium focuses on addressing the underlying trigger and supporting hair regrowth: