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Causes

Try a Self-Diagnosis First to See If My Symptoms MatchPostpartum · Hormonal Changes

Have you suddenly started losing a large amount of hair after childbirth? Has your part line widened and the crown started looking sparse around menopause? Rather than simple genetic hair loss, it may be telogen effluvium caused by hormonal changes. During pregnancy · childbirth · menopause, decreased estrogen causes hair follicles to shift into the resting phase all at once.

If These Apply to You, Postpartum · Hormonal Hair Loss Should Be Suspected.

  • Hair suddenly starts falling out excessively between 2–4 months after childbirth.

  • The part line and crown area have noticeably widened.

  • Fatigue, weight changes, and irregular menstruation accompany the symptoms.

  • You have previously been diagnosed with a thyroid disorder.

  • Even your eyebrows and body hair feel thinner.

Before Visiting the Clinic,
What Can You Check Yourself?

Postpartum · hormonal hair loss is difficult to resolve through lifestyle management alone.
However, stabilizing the body’s recovery rhythm is an important starting point.

Sleep Recovery

  • Recommended to sleep before 11 PM
  • Melatonin secretion during sleep restores the hair growth cycle
  • Try to maintain a consistent sleep pattern even while breastfeeding

Nutritional Balance Check

  • Check iron, vitamin D, and protein intake
  • Avoid excessive postpartum dieting
  • If anemia is suspected, a blood test is necessary

Thyroid Function Check

  • Check for postpartum thyroiditis after childbirth
  • In this case, hair loss may persist or recur
If hair loss continues for more than 6 months despite these lifestyle efforts,
a detailed diagnosis is necessary.

The Medical Mechanism of
How Postpartum · Hormonal Changes
Cause Hair Loss

Estrogen Reduction and Telogen Effluvium

During pregnancy, estrogen levels remain high, extending the hair growth phase.

After childbirth, estrogen rapidly decreases, causing growing hairs to simultaneously shift into the resting phase.

As a result, excessive hair shedding occurs 2–4 months later, known as “postpartum telogen effluvium.” Most cases recover naturally, but if genetic hair loss exists, recovery may be delayed or progress into female pattern hair loss.

Thyroid Dysfunction and Internal Hair Loss

Thyroid hormones are key factors that regulate the hair growth and resting cycles. When hormonal balance breaks down, the hair cycle becomes unstable and hair loss may occur.

With hypothyroidism, hair growth slows down, while hyperthyroidism increases resting-phase hair.

In particular, if temporary postpartum thyroiditis develops after childbirth, hair loss may recur or become prolonged, requiring internal medical treatment together with hair loss treatment.

Immune Balance Changes and Autoimmune Hair Loss

After childbirth, the immune system undergoes a rapid readjustment period. During this process, if immune balance collapses, autoimmune reactions attacking the hair follicles may appear.

As a result, alopecia areata may newly develop or existing hair loss may recur.

Autoimmune hair loss has limitations with simple hair growth treatment alone, so inflammation control and immune balance recovery must be addressed together to reduce recurrence.

Postpartum · Hormonal Hair Loss Cannot Be Solved With Medication Alone.

Hair loss medication may stimulate hair follicles. However, if hormonal, thyroid, and immune issues are not corrected, hair loss may continue to recur.

Rather than simply believing that postpartum hair loss “will resolve with time,” it is important to first determine whether the current hair follicles are still in a recoverable stage.

HairON Clinic’s Postpartum · Hormonal
Hair Loss Treatment Program

1

Precision Diagnosis

  • Treatment DetailsScalp · Hair Follicle Analysis + Blood · Hormone Testing
  • Main EffectsVisualization of the Cause
2

Internal Medicine Collaboration

  • Treatment DetailsThyroid · Iron · Vitamin D Evaluation
  • Main EffectsCorrection of Overall Body Balance
3

Hair Follicle Strengthening Injection

  • Treatment DetailsInflammation Relief + Nutrient Supply
  • Main EffectsAcceleration of Recovery Speed
4

Customized Design For Women

  • Treatment DetailsEvaluation of Female Pattern Hair Loss Progression
  • Main EffectsLong-Term Maintenance Strategy

Hair Loss Diagnosis and Treatment Methods
Differ Depending on the Cause.

Hair loss may appear similar in symptoms, but depending on the cause, the progression pattern and treatment direction can differ. Therefore, if noticeable changes occur, it is important to receive an accurate diagnosis without delay.

HairON is a hair loss specialty clinic located in Gangnam that carefully evaluates your current condition and designs a treatment direction tailored to the cause.
Get a Hair Loss Cause Diagnosis

Frequently Asked Questions

Hair Loss Research Center

View All Articles

Postpartum · Hormonal Changes

Lack of sleep, excessive tension, chronic fatigue. The warning signs sent by the body also appear on the scalp. Have you experienced major stress within the past 3 months?

If so, it may not be simple hair loss, but “neurological hair loss.”
Diagnose My Hair Loss Cause Now

HairON Clinic
Hours of Operation

  • Weekdays (Mon–Fri)10:00 AM – 8:00 PM
  • Saturday10:00 AM – 3:00 PM
  • Lunch Break2:00 PM – 3:00 PM
  • Phone Consultation+82-02-6949-2030
  • 3F, Hongwoo Building, 373 Gangnam-daero, Seocho-gu, Seoul, South Korea

Insights » Hair Loss Treatment by Dr. Hyunggon Son

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Hair loss in women in their 40s may not be simply a sign of aging. If you’re concerned about thinning hair or reduced volume, explore the causes and management options through a first visit to Hairon Clinic.