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Dr. Chrysoula I. Liakou MD, PhD
- Treated online: Yes, usually. A doctor can find the cause from your story and photos, arrange blood tests and treat it; patches, scarring or an unclear cause need a dermatologist.
- How common: more than half of women notice hair loss at some point, and about 40 in 100 show signs of female pattern hair loss by the age of 50.
- Normal shedding: losing 50 to 100 hairs a day is normal. Sudden shedding of more is usually telogen effluvium, 2 to 3 months after a trigger.
- What works: treating the cause: correcting low iron or a thyroid problem, and minoxidil or spironolactone for female pattern hair loss. Results take at least 6 months.
- Emergency: hair loss is not an emergency. Call 112 for swelling of the face, lips or throat, or difficulty breathing, after a new medicine.
Hair loss on its own is not an emergency. Do not book a video appointment if you have swelling of the face, lips, tongue or throat or difficulty breathing after a new medicine, or chest pain, fainting or severe breathlessness after starting minoxidil. Call 112 or go to an emergency department.
Can an online doctor treat hair loss in women?
Yes, usually. Most hair loss in women is shedding after a trigger, female pattern hair loss, or hair loss from low iron, a thyroid problem or hormones, which a doctor can work out from your story and clear photos. The doctor arranges blood tests at a laboratory near you, treats what is found, prescribes minoxidil or spironolactone for female pattern hair loss when they suit you, and follows your progress on photos. Round patches, a red, scaly or scarred scalp, or a receding hairline with thinning eyebrows need an examination by a dermatologist.
How an online consultation helps with hair loss in women
- The cause found: Shedding, pattern hair loss, low iron, thyroid and hormones each have their own clues and their own treatment.
- The right tests: Iron, thyroid and other blood tests when your story points to them, at a laboratory near you.
- Treatment that works: Minoxidil, spironolactone or treatment of the cause, with a realistic timeline.
- Support: Hair loss can affect how you feel, and help with that is part of the plan.
What the doctor checks in an online consultation for hair loss
The doctor asks about the warning signs first, then about the pattern of the hair loss and your health. The doctor asks about:
- Warning signs: round patches, a red, scaly, sore or shiny scalp, burning or itching along the hairline, thinning eyebrows, or hair loss with weight loss, night sweats or a high temperature.
- The pattern: shedding from all over, thinning on top with a wider parting, a receding hairline, or patches.
- The months before: an illness, an operation, childbirth, a crash diet, rapid weight loss, stopping the pill or a stressful event 2 to 3 months before the shedding started.
- Periods and hormones: heavy or irregular periods, acne, extra hair on the face or body, pregnancy and the menopause.
- Iron and thyroid: tiredness, breathlessness, a vegetarian or vegan diet, feeling cold or hot, or weight changes.
- Your medicines: including weight-loss injections, hormones and supplements.
- Hairstyles: tight ponytails, braids, extensions, relaxers and heat.
- Your family: thinning hair in your mother, sisters or grandmothers.
- How it is affecting you: hair loss can be very upsetting, and that matters.
Before the call, take photos of your parting, the top of your head, your hairline and your temples in bright daylight, with dry hair. If you are shedding, note when it started and think back 3 months before that.
What causes hair loss in women?
The most common causes are sudden shedding after a shock to the body (telogen effluvium) and gradual thinning on the top of the head (female pattern hair loss). Low iron, thyroid problems, hormones, childbirth, the menopause, medicines and tight hairstyles are other causes, and some women have more than one.
Swipe sideways to compare →
| Cause | What you notice | Where to read more |
|---|---|---|
| Telogen effluvium | Sudden shedding from all over, 2 to 3 months after illness, stress, surgery or weight loss | Telogen effluvium |
| After childbirth | Shedding about 3 months after the birth, usually back to normal within a year | Postpartum hair loss |
| Female pattern hair loss | Gradual thinning on the top of the head and a wider parting; the hairline is usually kept | Female pattern hair loss |
| Low iron | Shedding with tiredness, often with heavy periods or a diet low in iron | This page: tests |
| Thyroid problems | Shedding with tiredness, weight change, or feeling cold or hot | This page: tests |
| PCOS (PMOS) | Thinning on top with irregular periods, acne or extra hair on the face or body | PCOS |
| Tight hairstyles | Thinning at the edges, temples or partings | Traction alopecia |
| Alopecia areata | Smooth, round bald patches | Alopecia areata |
| Frontal fibrosing alopecia | A receding hairline after the menopause, with thinning eyebrows | Frontal fibrosing alopecia |
| Medicines | Shedding after starting a new medicine, or during chemotherapy | This page: special situations |
Why am I suddenly losing so much hair?
Sudden, heavy shedding is most often telogen effluvium: a shock to the body, such as an illness with a high temperature, childbirth, an operation, severe stress or a crash diet, pushes many hairs into their resting phase at once, and they fall out 2 to 3 months later. It usually settles within 6 to 9 months. Low iron and thyroid problems can cause shedding too, which is why tests help when there is no clear trigger.
How much hair loss is normal?
Losing 50 to 100 hairs a day is normal, and you see more on days you wash or brush your hair. Losing more than about 125 a day, a wider parting, or a thinner ponytail is worth checking.
Thinning on top: female pattern hair loss
Female pattern hair loss is the most common type of gradual hair loss in women. Hair on the top of the head becomes thinner and the parting wider, while the hairline at the front is usually kept. About 40 in 100 women show signs of it by the age of 50, and it is more common after the menopause.
It runs in families, through many genes from either parent. Most women with it have normal hormone levels. A few have high male hormones, with acne, irregular periods or extra hair on the face or body, as in PCOS. Without treatment it tends to get slowly worse over the years, in phases of faster thinning followed by stable periods. The female pattern hair loss page covers it in detail.
Does the menopause cause hair loss?
Hair often becomes thinner and drier in the months or years around the menopause. Oestrogen may help keep hairs in their growing phase, and as it falls, female pattern hair loss, which is most common after the menopause, can show. A receding hairline with thinning eyebrows after the menopause can be frontal fibrosing alopecia, a scarring hair loss that needs a dermatologist early.
See a doctor if your hair loss is rapid or patchy, your scalp is painful, itchy, red or scaly, or it comes with acne, extra facial hair or unusual periods. The menopause page covers the other symptoms and HRT.
Can PCOS cause hair loss?
Yes. PCOS, now also called polyendocrine metabolic ovarian syndrome (PMOS), can cause thinning hair or hair loss from the head, along with irregular periods, acne and extra hair on the face or body, because of higher levels of male hormones. Most women with PCOS do not lose hair, though. The doctor can arrange the tests for PCOS and treat the hair loss in the same way as female pattern hair loss, often with spironolactone. See PCOS for the other treatments.
Which tests help with hair loss?
Tests are not always needed: shedding after a clear trigger and typical female pattern hair loss can be recognised without them. When they help, the doctor arranges them at a laboratory near you:
- Iron and a full blood count: low iron is common with heavy periods, in pregnancy and with a diet low in iron.
- Thyroid function: an underactive or overactive thyroid can cause shedding.
- Vitamin B12, folate, vitamin D and zinc: when your diet or symptoms point to them.
- Hormones: testosterone and related hormones when you have irregular periods, acne or extra facial or body hair.
A scalp biopsy is rarely needed, and only in person.
What vitamin are you lacking when your hair falls out?
Low iron is the deficiency most often linked to hair loss, and low vitamin B12 or folate can play a part. Correcting a deficiency helps the shedding it was causing, but there is not enough evidence that supplements help when your levels are normal.
Which hair loss treatment might the doctor recommend?
Treatment depends on the cause, how long it has gone on and whether you are pregnant or planning a pregnancy. This is the framework the doctors use:
Swipe sideways to compare →
| What you have | Likely first step | Suitable for online care? | When in-person care is needed |
|---|---|---|---|
| Shedding 2 to 3 months after a trigger | Reassurance, gentle hair care and time | Yes | Not usually needed |
| Shedding with tiredness, heavy periods or a restricted diet | Blood tests, and treatment of what is found | Yes | For the blood test at a laboratory |
| Gradual thinning on top | Minoxidil, and sometimes spironolactone | Yes | Not usually needed |
| Thinning with irregular periods, acne or extra hair | Tests for PCOS, and treatment of the hair loss and the cause | Yes | For blood tests and sometimes a scan |
| Round patches, a red, scaly or scarred scalp, or eyebrow loss | A dermatologist | Partly | For the examination and sometimes a biopsy |
| Hair loss with weight loss, night sweats or a high temperature | Assessment of the illness behind it | Partly | Promptly, for an examination and tests |
Not sure why your hair is thinning? A doctor can find the cause and plan treatment in one consultation.
See available times →Treatment options for hair loss in women
Minoxidil
Minoxidil applied to the scalp is the main treatment for female pattern hair loss. It needs to be used every day, results take at least 6 months, and the benefit fades if you stop. Tablets are an option when the solution or foam has not been enough. It is not used in pregnancy or while breastfeeding. See minoxidil.
Spironolactone
A tablet that blocks the effect of male hormones on the follicles. It does not cure female pattern hair loss, but it can slow or stop the thinning: most women notice an improvement after 6 months, and treatment may need 12 to 18 months. It is used off-label for hair loss. It is not taken in pregnancy or when trying to conceive, so reliable contraception is needed, and a potassium blood test is done before starting. Common side effects are sore breasts, irregular periods and dizziness.
Treating the cause
Iron tablets for low iron, treatment for a thyroid problem, and a review of a medicine that may be causing shedding. Hair shed after a trigger usually grows back on its own once the trigger has passed.
Finasteride
Women who could become pregnant should not take finasteride, because it can harm a male baby. Spironolactone is the usual hormone-blocking tablet for women.
Other treatments
Platelet-rich plasma (PRP) and low-level laser devices have uncertain benefit. A hair transplant suits some women with stable female pattern hair loss, but not everyone.
A prescription is never issued without a consultation. If the doctor prescribes, use the prescription at a pharmacy near you.
Coping with hair loss as a woman
Hair loss can affect your self-esteem and cause anxiety. Things that help many women:
- talking to friends, family or a partner about how you feel and the support you need
- joining a support group or an online community
- covering up, or choosing not to: wigs, hairpieces, extensions, scarves, coloured hair sprays and hair-thickening fibres
- being patient: regrowth can take a long time, and the new hair may differ in texture or colour
- avoiding miracle cures
If your mood is low or you feel anxious most days, the doctor can help with that too: see anxiety and depression.
Special situations
After having a baby
Shedding about 3 months after giving birth is very common and usually settles by the baby’s first birthday. See postpartum hair loss.
Weight-loss injections
Hair loss has been reported with weight-loss medicines, mostly in women, and rapid weight loss is a known trigger of shedding. Do not stop a prescribed medicine on your own: see telogen effluvium.
Pregnancy and breastfeeding
Minoxidil and spironolactone are not used in pregnancy, and minoxidil is not used while breastfeeding. Tell the doctor if you are pregnant, breastfeeding or planning a pregnancy.
Chemotherapy
Hair loss during cancer treatment is managed by the cancer team, who can advise on what to expect and on wigs.
Children
Mobi Doctor consultations are for adults aged 18 and over. A child who is unwell needs a paediatrician or a local doctor in person, and emergency signs in a child mean 112.
When hair loss in women is treated online, and when you need in-person care
Treated online: finding the cause from your story and photos, arranging blood tests, treating low iron and thyroid problems, prescribing minoxidil and spironolactone, and following progress on photos.
In-person care: blood tests at a laboratory, round patches, a red, scaly or scarred scalp, a receding hairline with thinning eyebrows, hair loss with signs of a wider illness, and the rare scalp biopsy.
When to get in-person care
Call 112 or go to an emergency department now for:
- swelling of the face, lips, tongue or throat after a new medicine
- difficulty breathing or swallowing
- chest pain, fainting or severe breathlessness after starting minoxidil
Get medical advice the same day for:
- hair loss with a high temperature, drenching sweats, weight loss you cannot explain or feeling generally unwell
- a bald patch that is painful, boggy or leaking pus
- a racing heartbeat, swollen ankles or dizziness after starting minoxidil tablets
How Mobi Doctor works
- Book a time that suits you: daily 7am–11pm CEST. You can see a doctor over video, usually within 15 minutes. No subscription, and the exact price is shown before you pay.
- Speak to a licensed doctor about your hair: show your parting, the top of your head and your hairline on camera, and say when the hair loss started and what happened in the months before.
- Leave with a plan: the tests you need, what to take and for how long, and which signs mean you should be seen in person. If the doctor prescribes, use the prescription at a pharmacy near you.
No sign-up needed
Hair loss in women can have more than one cause. Tick every symptom you have to see each condition page that mentions it. It finds the right page, not a diagnosis: a doctor gives you that on a video call.
Tap the body — an area or a point — to browse symptoms anywhere
Similar symptoms, different condition? Female Pattern Hair Loss can start the same way. Compare them, or look up any other symptom in the full symptom checker.
Frequently asked questions about hair loss in women
Why am I suddenly losing so much hair as a woman?
Most often because of telogen effluvium, shedding 2 to 3 months after an illness, childbirth, an operation, stress or rapid weight loss. Low iron and thyroid problems can also cause it, and a doctor can check.
What causes hair loss in women?
The most common causes are shedding after a trigger and female pattern hair loss. Low iron, thyroid problems, PCOS, childbirth, the menopause, medicines and tight hairstyles are other causes.
What are the signs of hair loss in women?
In women, hair loss usually shows as a wider parting, a thinner ponytail, more scalp showing on the top of the head, or handfuls of hair on the brush and in the shower rather than a bald patch. Sudden shedding from all over the scalp points to telogen effluvium; slow thinning on the crown with the front hairline kept points to female pattern hair loss; round bald patches suggest alopecia areata; and thinning at the temples or hairline with tight styles suggests traction alopecia.
How much hair loss is normal for a woman?
Losing 50 to 100 hairs a day is normal. Losing more than about 125 a day, a wider parting or a thinner ponytail is worth checking.
What vitamin are you lacking when your hair falls out?
Low iron is the deficiency most often linked to hair loss, and low vitamin B12 or folate can play a part. Supplements help when levels are low, not when they are normal.
How do you fix thinning hair?
By treating the cause: correcting low iron or a thyroid problem, waiting for shedding to settle, or using minoxidil or spironolactone for female pattern hair loss. Results take at least 6 months.
Does the menopause cause hair loss?
It can. Hair often thins around the menopause, and female pattern hair loss is most common after it. A receding hairline with thinning eyebrows can be frontal fibrosing alopecia, which needs a dermatologist.
Can PCOS cause hair loss?
Yes. PCOS can cause thinning hair on the head through higher male hormones, usually with irregular periods, acne or extra hair. Most women with PCOS do not lose hair.
Is minoxidil safe and effective for women?
Yes. Minoxidil is the main treatment for female pattern hair loss, as a solution, foam or tablets. It is not used in pregnancy or while breastfeeding.
Can women take finasteride for hair loss?
Women who could become pregnant should not take finasteride for hair loss, because it can harm a male baby, and it is not licensed for women. After the menopause a specialist occasionally uses it off-label, but spironolactone is the usual hormone-blocking tablet for women with female pattern hair loss, and minoxidil remains the treatment with the most evidence.
Will my hair grow back?
Hair lost through shedding usually grows back once the trigger has passed. Female pattern hair loss can be slowed or partly reversed with treatment. Scarring hair loss does not grow back.
How long does hair loss in women last?
It depends on the cause. Shedding after illness, childbirth, stress or weight loss usually slows after 6 months and the hair is back to its usual fullness within a year; hair loss from low iron or a thyroid problem improves over months once the cause is corrected; and traction alopecia regrows within months of stopping tight styles if the follicles are not scarred. Female pattern hair loss is lifelong and slowly progressive, which is why its treatment is continued.
How do you stop hair loss and regrow hair naturally?
There is no proven natural cure for hair loss. Eating well, avoiding crash diets and handling hair gently help, and low iron can be corrected. Minoxidil is the treatment with the best evidence for regrowth.
How can women prevent hair loss?
Not every cause can be prevented, but many can: eat enough protein and iron and avoid crash diets, which trigger shedding 2 to 3 months later; wear hair loose or in soft styles and give it breaks from extensions, braids and tight ponytails; go easy on heat, bleach and relaxers; manage thyroid problems and PCOS; and ask a doctor to review any new medicine that coincides with shedding. For female pattern hair loss, starting minoxidil early keeps more hair than starting late.
Can an online doctor help with hair loss in women?
Yes, usually. A doctor can find the cause of your hair loss, arrange blood tests and prescribe treatment. Patches, a scarred scalp or an unclear cause need a dermatologist.
- Hair loss in women, Cleveland Clinic (US), updated 9 February 2024.
- Hair loss, NHS, National Health Service (UK), reviewed 24 January 2024.
- Women and hair loss: coping tips, NHS, National Health Service (UK), reviewed 24 January 2024.
- Female pattern hair loss, DermNet, New Zealand, 2015, updated 2026.
- Telogen effluvium (hair shedding), DermNet, New Zealand, updated June 2024.
- Menopausal hair loss: more than ‘a bad hair day’, Women’s Health Concern, British Menopause Society, reviewed November 2025.
- Polyendocrine metabolic ovarian syndrome (PMOS), NHS, National Health Service (UK), reviewed 30 June 2026.
- Spironolactone for female pattern hair loss, Gloucestershire Hospitals NHS Foundation Trust, Dermatology, 2026, review due July 2029.
- Finasteride: fertility and pregnancy, NHS, National Health Service (UK), reviewed 2 August 2023.
- Minoxidil solution, DermNet, New Zealand, updated November 2025.
- Alopecia as an emerging adverse effect associated with glucagon-like peptide-1 (GLP-1) receptor agonists for weight loss: a scoping review, Rojas Lopez R, Lynett Barrera D, Amaya Muñoz M, Saavedra Diaz MP. Cureus, 2025.
This page is for information only and is not a substitute for a medical consultation. Guideline links are provided for transparency; treatment decisions are made with your doctor.
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