Skip to main content

Health condition · Clinically reviewed

Excess hair shedding, telogen effluvium and when it needs a specialist look.

Everyone loses around 100 hairs a day. Noticeably more, usually 2 to 4 months after a trigger, is a common and mostly reversible pattern called telogen effluvium.

Jump to treatment
A radiographer guides a patient onto the bed of an advanced 3 Tesla MRI scanner in a London imaging suite

Why trust this guide

  • 01

    Clinically reviewed

    Written by our editorial team and reviewed by a registered UK clinician before publication.

  • 02

    Sourced from guidance

    Checked against British Association of Dermatologists, NICE and peer-reviewed trichology sources you can see at the end.

  • 03

    Current for 2026

    Reflects modern UK dermatology and trichology practice, including post-COVID shedding and ferritin targets for regrowth.

Key facts

Excess hair shedding at a glance.

The essentials, in plain English - what it is, the usual triggers and how it is worked up in the UK.

  • What it is

    Increased daily loss of hair - usually more than the normal 50 to 100 hairs a day - most often from a reactive process called telogen effluvium.

  • Normal loss

    Everyone sheds around 100 hairs a day. Noticeable shedding often means 200 to 500 daily hairs coming out for weeks or months.

  • Common trigger

    A stressor 2 to 4 months earlier - illness, surgery, childbirth, crash dieting, iron loss, thyroid change, new medication or COVID.

  • Acute vs chronic

    Acute telogen effluvium self-resolves in 3 to 6 months. Chronic shedding lasts longer than 6 months and needs a specialist look.

  • Not the same as balding

    Diffuse shedding is different from pattern hair loss or alopecia areata - the treatment and prognosis are different too.

  • Reassurance matters

    Most telogen effluvium recovers fully once the trigger is treated. Ferritin, thyroid and diet are the usual levers.

Why this guide matters

Sort the trigger, not the shampoo aisle.

Most excess shedding is reactive, treatable and reversible. The three points below shape everything else on this page.

  • Find the trigger 2 to 4 months back

    Illness, surgery, childbirth, iron loss, thyroid change, crash diets and new medications are the usual suspects - identify and treat.

  • Check the bloods that matter

    Ferritin (aim above 70), thyroid function, full blood count, vitamin D, B12 and zinc - selective, not scattergun testing.

  • Know when it is not telogen effluvium

    Patchy loss, scarring, a widening parting or chronic shedding beyond 6 months deserves a specialist look.

How the diagnosis is made

From first shedding to a clear plan.

The steps a UK GP or dermatologist will normally follow, in order - so you know what to expect and why.

  1. 01

    Assessing

    History and timeline

    A careful review of the last 2 to 6 months - illness, surgery, pregnancy, weight loss, medications and mood - to spot the likely trigger.

  2. 02

    Assessing

    Pattern and scalp exam

    Diffuse shedding across the whole scalp, a gentle pull test and trichoscopy help separate telogen effluvium from pattern loss and scarring alopecia.

  3. 03

    Assessing

    Red-flag features

    Scalp symptoms, patchy loss, scarring or a widening parting change the diagnosis - and the referral pathway.

  4. 04

    Confirming

    Bloods for treatable causes

    Ferritin (aim above 70 for regrowth), full blood count, thyroid function, vitamin D, B12 and zinc - plus selective tests if history suggests them.

  5. 05

    Confirming

    Medication review

    Beta-blockers, retinoids, anticoagulants, SSRIs and hormonal changes can all drive shedding - reviewed with the prescribing clinician.

  6. 06

    Planning

    Specialist trichology or dermatology

    Chronic, patchy, scarring or refractory shedding is referred for trichoscopy, biopsy where needed and a targeted plan.

  7. 07

    Planning

    Treatment plan and follow-up

    A written plan covering the trigger, nutrition, topical treatment and review at 3 and 6 months to track regrowth.

Typical timeline: a first visit to a settled plan in weeks, with regrowth over 3 to 6 months.

Symptoms

What excess shedding actually looks like.

Diffuse loss across the whole scalp, a thinner ponytail, more hair in the shower and, hopefully, short regrowth on the way. And the features that mean something else is going on.

  • Diffuse daily shedding

    Hair on the pillow, in the shower drain and on the hairbrush - across the whole scalp rather than one patch.

  • Ponytail feels thinner

    A visibly smaller ponytail circumference and less volume when styling, often 2 to 4 months after a trigger.

  • Positive gentle pull test

    More than a few telogen (club) hairs come out with a light tug - a supportive sign of active shedding.

  • Short regrowth hairs

    Fine, tapered new hairs at the hairline and parting are a good sign - regrowth is already underway.

  • No widening parting

    Telogen effluvium usually spares the classic pattern-loss areas. A widening midline parting points to female pattern hair loss instead.

  • Post-partum shedding

    A common, self-limiting form starting 2 to 4 months after birth and settling by 12 months.

  • Post-illness or post-COVID

    A well-recognised trigger - shedding starts weeks after the infection and recovers over months.

  • Red flag - patchy or scarring loss

    Distinct patches, scalp scaling, redness, itching or a shiny scarred scalp needs specialist dermatology.

Treatment

How excess shedding is treated in the UK.

Treat the trigger, restore iron and thyroid balance, protect the scalp - and add specialist options like minoxidil, low-level laser or PRP when needed.

  • Treat the trigger

    Replace iron if ferritin is low, correct thyroid disease, review medications and support recovery from illness or surgery.

  • Iron and ferritin

    For low ferritin, ferrous sulphate 200 to 300 mg with vitamin C - clinician-guided, with a target ferritin above 70 for regrowth.

  • Nutrition support

    Adequate protein, iron, zinc, biotin, vitamin D and omega-3 - most easily met through a varied diet, not high-dose supplements.

  • Topical minoxidil

    5 percent (or 2 percent in women) once or twice daily - specialist-guided, useful in chronic telogen effluvium and coexisting pattern loss.

  • Scalp care

    Gentle handling, less heat and traction, careful chemical use and a mild shampoo - protects fragile regrowing hairs.

  • Low-level laser therapy

    A specialist-supervised option through our hair-loss clinic - see /treatments/hair-loss-clinic/ for how it is used and monitored.

  • Platelet-rich plasma (PRP)

    Scalp PRP injections under specialist care - considered for chronic or refractory shedding with coexisting pattern loss.

  • Specialist referral

    Chronic, scarring or refractory shedding needs a dermatologist or trichologist for trichoscopy, biopsy and a targeted plan.

What this guide is based on

The sources behind every claim on this page.

UK national guidance and specialist society standards, current at the time of last review.

Key references

Guidelines and standards we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your GP, dermatologist or trichologist knows your scalp and history and can tell you which parts apply to you. If in doubt, get seen.

  • British Association of Dermatologists (BAD). Patient information leaflets on telogen effluvium and hair loss.

  • NICE Clinical Knowledge Summary. Hair loss and alopecia in adults.

  • Primary Care Dermatology Society. Guidance on diffuse hair loss.

  • MHRA. Drug-induced alopecia summaries for beta-blockers, retinoids, anticoagulants and SSRIs.

Red flags

When shedding needs urgent attention.

Most excess shedding is manageable in primary care. These are the situations that are not - and where a specialist opinion is needed.

  • Scarring alopecia

    Shiny, smooth, scarred patches with loss of follicular openings - lichen planopilaris or frontal fibrosing alopecia needs prompt dermatology.

  • Patchy round bald areas

    Sudden coin-shaped patches suggest alopecia areata - see /conditions/hair-loss-alopecia/ and get a dermatology opinion.

  • Widening midline parting

    A widening parting on the crown points to female pattern hair loss rather than telogen effluvium - the treatment is different.

  • Scalp pain, burning or itch

    Symptomatic scalp with redness, scale or tenderness needs a scalp exam to exclude scarring alopecia and inflammatory scalp disease.

  • Persistent shedding beyond 6 months

    Chronic telogen effluvium deserves a specialist look - ferritin, thyroid, medications and coexisting pattern loss are reassessed.

  • Rapid hair loss after chemotherapy

    Anagen effluvium - talk to the oncology team about scalp cooling and expected regrowth after treatment.

  • Pulling out hair (trichotillomania)

    A behavioural pattern of pulling - see /conditions/trichotillomania/ - benefits from psychological support alongside dermatology.

  • Systemic symptoms

    Fatigue, weight change, cold intolerance or heavy periods point to thyroid or iron issues - test and treat.

  • New medication start

    Shedding within a few months of a new drug is often reversible - review with the prescribing clinician before stopping anything.

Living with it

A common, reversible condition, with a clear timeline.

Four things that make the biggest difference day to day - patience, nutrition, gentle handling and knowing when to step up to a specialist.

A quiet reminder

Regrowth is slow, but it usually comes.

Hair grows about a centimetre a month - so noticeable recovery takes months, not weeks. Keep going.

  1. 01 Timeline

    Expect 3 to 6 months

    Acute telogen effluvium usually settles within six months of the trigger resolving. Regrowth takes longer to look normal.

  2. 02 Nutrition

    Eat for regrowth

    Protein at every meal, iron-rich foods with vitamin C and enough calories - crash diets are a common preventable trigger.

  3. 03 Gentle

    Handle hair kindly

    Less heat, less traction, no tight styles and a wide-tooth comb - regrowing hair is fragile.

  4. 04 Escalate

    Speak up if it drags on

    Shedding beyond six months, patchy loss or a widening parting all deserve a dermatology or trichology review.

Frequently asked

Everything we get asked about excess shedding.

Quick answers on daily loss, triggers, ferritin, regrowth and when to see a specialist.

  • How much hair loss is normal?

    Around 50 to 100 hairs a day is normal. Noticeable shedding often means 200 to 500 hairs a day for weeks or months, most commonly from a reactive process called telogen effluvium.

  • What causes sudden excess shedding?

    A physical or emotional stressor 2 to 4 months earlier is the classic cause - illness (including COVID), surgery, childbirth, crash dieting, thyroid change, iron loss or a new medication such as a beta-blocker, retinoid, anticoagulant or SSRI.

  • Will my hair grow back after telogen effluvium?

    For most people, yes. Acute telogen effluvium is self-limiting and usually recovers fully within three to six months of the trigger settling, provided ferritin, thyroid and diet are addressed.

  • What ferritin level do I need for hair regrowth?

    Many dermatologists aim for a ferritin above 70 micrograms per litre to support regrowth, even when it sits within the standard laboratory reference range. Iron replacement should always be clinician-guided.

  • Is this the same as female pattern hair loss?

    No. Telogen effluvium is diffuse shedding across the whole scalp with normal density; female pattern hair loss shows a widening midline parting and reduced density on the crown. They can coexist - see /conditions/hair-loss-alopecia/ for the pattern-loss guide.

  • When should I see a specialist?

    If shedding lasts more than six months, if there are patchy or scarred areas, a widening parting, scalp symptoms or the diagnosis is unclear - a dermatologist or trichologist will do trichoscopy and, where needed, a scalp biopsy.

Related content

Keep reading.

Pulse Healthcare concierge

Send us your enquiry

A concierge service for UK private healthcare. We match you with the best vetted clinics and consultants in our network - they then contact you directly.

So we can match you to the right clinician close to you.

We reply to every enquiry within 24 hours (Mon–Fri). Confidential - your details are never shared outside our vetted consultant network.