Quick answer: The causes of hair loss doctors see most often in women are female pattern hair loss (DHT sensitivity), iron and ferritin deficiency, thyroid disorders, PCOS and hormonal imbalance, postpartum shedding, telogen effluvium from stress or crash diets, and traction from tight hairstyles. Most are treatable once correctly identified.
Women’s hair loss tends to show as diffuse thinning and a widening part rather than a bald patch — which makes the cause easy to miss. These are the seven we diagnose most often.
- Female pattern hair loss. A genetic, DHT-driven thinning across the crown and part line. It’s progressive, so early treatment protects the most hair.
- Iron & ferritin deficiency. One of the most common and most reversible causes in Indian women. Low iron stores trigger diffuse shedding that often resolves once corrected.
- Thyroid disorders. Both hypo- and hyperthyroidism disrupt the hair cycle. A simple blood test identifies it, and treating the thyroid usually settles the hair.
- PCOS & hormonal imbalance. Elevated androgens in PCOS thin scalp hair while sometimes increasing facial/body hair. Managing the hormones is key to stabilising it.
- Postpartum shedding. Many women shed heavily 2–4 months after childbirth as hormones normalise. It’s usually temporary and recovers within months.
- Telogen effluvium. Crash diets, illness, surgery or major stress can push many follicles into shedding at once, causing sudden diffuse loss that typically reverses.
- Traction alopecia. Tight buns, braids and frequent heat or chemical styling pull and damage follicles along the hairline — reversible early, permanent if ignored.
Frequently asked questions
Is women’s hair loss permanent?
Often not. Deficiency-, thyroid-, postpartum- and stress-related loss is frequently reversible; pattern loss can be slowed and partially regrown when treated early.
Which tests help find the cause?
A root-cause analysis with iron/ferritin, thyroid and hormonal markers plus a scalp exam. Book at misterhair.in/hairtest.
→ Find your cause: book a free hair test
Medically reviewed by Dr. Saranya Thulasidoss, MBBS, MCh (Plastic Surgery), Clinical Lead, Mister Hair. Last updated 2026.
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