Hair loss in women
- Most important first step
- Blood tests — correctable causes are common
- Commonly reversible
- Iron deficiency, thyroid disease, telogen effluvium
- Time to visible change
- 4 to 6 months, whatever the cause
Hair loss in women usually presents differently from men: diffuse thinning over the top of the scalp with a widening parting, rather than a receding hairline. Complete baldness is uncommon; what changes is density.
The crucial difference in how it should be managed is that correctable causes are common. Iron deficiency, thyroid disease and PCOS account for a substantial share, and all three are treatable. This is why a consultation that goes straight to a serum without investigating is doing it backwards.
The main causes
Female pattern hair loss
Gradual thinning over the crown, with the parting widening over years. Genetic, and often becoming apparent around the menopause. Managed rather than cured.
Telogen effluvium
Sudden, dramatic, diffuse shedding — handfuls in the shower — starting two to three months after a trigger: illness, high fever, surgery, childbirth, rapid weight loss, severe stress, or starting certain medicines. It recovers on its own. Recognising it saves months of unnecessary treatment.
Nutritional and hormonal
Iron deficiency is the most common and is frequently missed because haemoglobin can be normal while ferritin is low. Thyroid disease, vitamin D deficiency and PCOS all contribute.
Traction alopecia
From sustained tension — tight plaits, buns, extensions. It recedes at the temples and hairline, and if the tension continues long enough the loss becomes permanent.
Scarring alopecia
Frontal fibrosing alopecia and lichen planopilaris destroy follicles permanently. They are less common but genuinely urgent, because treatment can only preserve what has not yet been lost. A scalp examination identifies them; a conversation about shampoo does not.
How it is assessed
History first: the pattern, whether it is shedding or thinning, recent illness or delivery, cycle regularity, diet, medicines, and hairstyling. Then examination of the scalp, with trichoscopy to look at follicle calibre and spacing and to identify scarring if present.
Blood tests almost always: ferritin, thyroid function, vitamin D, and a hormonal profile where PCOS is suspected — irregular cycles, acne along the jawline, excess facial hair.
Treatment
- Correct what is correctable — iron, thyroid, vitamin D. This alone resolves a meaningful proportion of cases
- Topical minoxidil — the main evidence-based treatment for pattern hair loss. Expect early shedding and continue through it
- Anti-androgens — spironolactone, or oral contraceptives in PCOS-related loss, where appropriate
- PRP and GFC — useful as an addition to medical treatment, particularly for diffuse thinning
- Change the hairstyling — in traction alopecia this is the treatment, and no medicine substitutes for it
- Prompt treatment for scarring alopecia — to preserve remaining follicles
About the shedding that follows starting treatment
Minoxidil pushes resting follicles into a new growth cycle, and the old hairs are shed first. Shedding at weeks two to six is expected and it means the treatment is working. Almost everyone who stops at this point concludes it made things worse.
What else it could be
These are the conditions this is most often mistaken for. Treating the wrong one is the commonest reason a problem drags on for months.
| Often mistaken for | How it's told apart |
|---|---|
| Telogen effluvium | Sudden diffuse shedding 2–3 months after illness, delivery, surgery, crash dieting or severe stress. Recovers on its own once the trigger resolves. |
| Iron deficiency | Very common in Indian women, especially with heavy periods. Corrected with treatment — but needs testing, not guessing. |
| Thyroid disease | Both under- and over-active thyroid cause hair loss. Treating the thyroid restores the hair. |
| Traction alopecia | From tight plaits, buns and extensions. Recedes along the hairline and temples, and becomes permanent if the tension continues. |
| Scarring alopecia | Frontal fibrosing alopecia and lichen planopilaris destroy follicles permanently. Early diagnosis is urgent — this is why a scalp examination matters. |
Common questions
Why do I need blood tests when men often do not?
Because correctable causes are far more common in women. Iron deficiency, thyroid disease and PCOS between them account for a large share of female hair loss, and each is treatable once identified. Starting a topical treatment without testing risks spending months on the wrong problem.
I lost a lot of hair after my delivery. Is it permanent?
Almost certainly not. Post-partum telogen effluvium is expected, typically starts two to four months after delivery, and recovers over six to twelve months. It is distressing and it is self-limiting. Treatment is reassurance, nutrition and time — unless it persists beyond a year, which is worth reassessing.
Can I use minoxidil?
Yes, and it is the main evidence-based topical treatment for female pattern hair loss. Expect increased shedding in the first few weeks — this is the treatment working, not failing, and stopping at that point is the commonest reason it is abandoned.
Is finasteride an option for women?
It is used off-label in some women, generally post-menopausal, and it is absolutely contraindicated in anyone who could become pregnant because of the risk of harm to a male fetus. Spironolactone is more often used. Either requires a proper discussion first.
Will supplements fix it?
Only if you are deficient in what they contain. Correcting genuine iron or vitamin D deficiency helps substantially. Taking biotin or multivitamin hair supplements without a deficiency does nothing, and biotin interferes with thyroid blood tests, which causes real diagnostic confusion.
This page is general information and does not replace a consultation. Whether any treatment described here is right for you depends on examination, history and other medicines, and that assessment needs a doctor.