Norwood scale: stages 1 to 7 and hair transplant planning

Part of our hair transplant guide. One patient on r/HairTransplants had a second hair transplant in Thailand after being disappointed with the first. They put their own loss at roughly Norwood 6. This time the plan was front and middle first, with the crown left for a later decision.

A Norwood stage names that pattern. The scale describes male pattern hair loss in stages 1 to 7, plus variants for loss that doesn't follow the standard sequence. It gives you and a surgeon a shared word for where the hair is missing. It doesn't make the decision above for you: whether you're a candidate, how many grafts you need and which area gets them first come from an assessment of your donor hair, the hair you still have and where the loss is heading.

This page covers each stage and the planning question it raises, the A and vertex variants, how to compare your own pattern with the chart, and what to ask before you agree to anything.

What is the Norwood scale?

The scale gives clinicians a shared way to describe how male pattern hair loss is spread across the scalp. Two landmarks do most of the work. The temples are the corners of the front hairline. The vertex is the crown, toward the back of the top of your head. Most stages are described by what has happened at those two spots, following the Norwood section of a 2016 classification review.

Two more terms matter. Donor hair is hair a surgeon takes from one area of your scalp to move into another. Native hair is the hair already growing where treatment is being considered. Hair transplantation redistributes donor hair. It isn't prevention: the International Society of Hair Restoration Surgery is clear that surgery doesn't stop native hair thinning afterward, and future loss can open new gaps that need further treatment.

So a surgical assessment goes well beyond the stage: your history, how fast the loss is moving, scalp health, and the quantity and quality of the hair available to move. A clinical review of who is a candidate puts it plainly: donor hair quality and density must be adequate to undertake restoration. Ask what else the examination needs to establish.

Norwood scale chart: what stages 1 to 7 look like

The descriptions below follow the classification review linked above. Use them to place your own pattern before an assessment, not instead of one. Under each stage is the planning question it raises, and what to ask.

Norwood 1

There is little or no recession at the hairline. On the chart this is the starting point rather than a problem, and too little visible loss can mean monitoring or medical treatment rather than surgery. If you're here and worried, the question is what has actually changed. Bring an older photo, because a surgeon will want evidence of change rather than a resemblance to a drawing.

Norwood 2

At Norwood 2, receding hairlines leave a triangular recess at each temple. This shape can be active loss or a stable, mature-looking hairline, and the chart can't tell you which. That takes history and examination. So the question for a surgeon is what evidence shows the hair is still changing. A match with the drawing is not on its own a reason to operate.

Norwood 3

The temple recesses go deeper and the skin inside them is bare or only sparsely covered. A Norwood type 3 pattern can be considered for surgery, but the stage alone doesn't make you a candidate: donor hair, scalp health, the speed of loss and your expectations all get assessed first. Ask the surgeon to mark the area they propose treating and where the new hairline would sit. A hairline placed high can be lowered later. The reverse is difficult.

Norwood 3 vertex

Here the loss is mainly at the crown. The front has receded no further than stage 3, and it can be less, so the label doesn't require a stage 3 hairline. The crown is the main event. The planning question follows: is the crown the priority, and what happens if the front keeps thinning after the crown is treated? One HairLossTalk poster who identifies as stage 3 vertex said the crown bothered them more than their receding hairline, and their worry was needing another operation later. Surgery doesn't stop the surrounding hair thinning, so ask what's planned now and what would trigger a reassessment.

Norwood 4

Both the front and the crown have lost more hair, and a bridge of hair still runs across the top between them. That bridge is native hair, so it can keep thinning after surgery. Ask how the surgeon would handle the front, the crown and the hair between them, and whether all three are treated now or one waits.

Norwood 5

The bald areas at the front and crown grow larger, and the bridge between them narrows and thins. Limited or poor-quality donor hair can restrict the area covered and the density achievable. Ask what coverage the plan aims for and where it would leave visible thinning.

Norwood 6

The bridge is gone, and the loss at the front and crown have joined into one area. The r/HairTransplants poster in the opening put themselves at roughly this stage, and their decision, front and middle first with the crown left for later, is the kind of choice a plan at this stage is built around. Ask which areas would take priority if the whole area can't be covered the way you want, and what the untreated part would look like.

Norwood 7

Only a narrow horseshoe of hair remains around the sides and back. With that little left, the donor assessment is essential. Stage 7 on its own isn't a no: selected stage 7 patients appear in the published advanced-loss series, and Absolute Hair Clinic, a Thai clinic, says on its consultation page that for extensive stage 6 to 7 loss a proper donor assessment is essential to knowing whether you're a candidate. Ask whether the donor hair can support the specific coverage proposed, not only whether surgery is possible.

What do the Norwood A variants look like?

In an A pattern, the front hairline retreats backward as a whole, without leaving a central island of hair. There's no separate crown patch developing at the same time. The recognized variants are 2A, 3A, 4A and 5A, also written IIA, IIIA, IVA and VA. The set stops there: there's no 6A or 7A, because beyond 5A the loss looks like the standard stages 6 and 7.

The classification uses the ear canals as a reference for how far back the hairline has moved. Picture a line across the top of the head at the level of the ear canals when you read the table.

The letter describes how the loss is distributed, not how severe it is, and it doesn't mean the crown is always spared: the 5A description includes it. Compare that with the vertex pattern, where the crown is the main affected area and the front has receded less.

How to compare your hair loss with the chart

Compare your hairline, temples and crown

Start with photos from more angles than a mirror gives you. For its online consultation, Absolute Hair Clinic asks for front, top, side, back and close-up views, including the donor area, with dry, clean, unstyled hair and consistent angles. Those are one clinic's instructions, and they're a good template for looking at your own head.

Then add time. Bring older photos if you have them, note which change bothers you most and when you first noticed it, and write down any previous treatments or surgery. The clinic asks for that history alongside the photos.

Photos show what you're worried about. They don't replace the examination, which the clinical review describes as a medical history plus magnified examination of the follicles in both the treated and donor areas, checking for miniaturization in each. The stage is a small part of that.

When your hair loss does not fit the chart

Thinning can be spread across an area instead of leaving an obvious bare patch. The clinical review separates diffuse patterned thinning from diffuse unpatterned loss that also affects the donor region, and the difference matters because the second kind reaches the hair a transplant would use. That's a distinction for an examination, not a photo.

The Norwood chart describes male pattern loss. Other patterns use other classifications. The ISHRS describes the Ludwig scale for female-pattern loss, for example. Ask which description fits the examined pattern rather than forcing yours into the nearest drawing.

Why does hair loss follow these patterns?

Hair follicles that are sensitive to the hormone dihydrotestosterone (DHT) produce finer and finer hair over time. The ISHRS guide to androgenetic alopecia (pattern hair loss) calls this miniaturization, and it's what produces the thinning the scale describes.

A stage doesn't come with a timetable for progression. The same guide says the expression of hair loss is so variable that it is not always predictive of how you will advance, so family history can't reliably tell you where your own loss ends up either. The chart runs to 7. Nothing in it says everyone gets there.

How surgeons use your Norwood stage to plan a transplant

The assessment has to connect the area you want treated with the hair available to move, and a Norwood label measures neither. A planning study showed with simulated cases that the same Norwood classification can describe treatment areas of quite different sizes, which is one reason two people at the same stage can get very different plans.

So use these questions to find out what the surgeon has actually assessed:

Ask for a plan for each area you want treated

Ask for a written breakdown of the front, the middle of the scalp and the crown, where relevant. Have the surgeon mark what they propose treating now, what would remain untreated, and what would need a later decision.

Hairline design is individual. Published practice guidelines say hairline placement should weigh your age, head shape, hair characteristics, preferences and likely future loss. Coverage goals differ from one plan to the next, as the advanced-loss series shows. A written breakdown is the simplest way to compare two proposals.

Also ask the surgeon to explain the proposed operation and its risks separately from the stage label.

Which Norwood stages can suit a hair transplant?

Norwood 1 and 2: when is surgery worth considering?

Start with whether there's enough loss to justify surgery and whether it has settled. Too little visible loss, or loss that is changing quickly, can favor monitoring or medical treatment before a transplant. A low stage doesn't automatically qualify you or rule you out.

One Hair Restoration Network poster asked whether to wait until the recession got worse and then have a bigger procedure. It's the right question to put to a surgeon: what finding would support operating now, and what would favor waiting? Our guide to the best age for a hair transplant covers the wider timing decision.

Norwood 3 and 4: what needs assessing before surgery?

Hair transplantation at Norwood 3 can be considered after assessment. The surgeon still needs to examine donor hair and scalp health, and the stability of the loss and your expectations matter as much. The same applies at stage 4, where the affected area is larger.

Ask exactly which area the surgeon would treat. A vertex pattern raises a crown question. An A pattern raises a front-to-back coverage question. The label tells you which conversation you're in.

Restoring your original hairline isn't something the stage can promise. The proposed position has to account for future loss and your hair characteristics as well as what you'd like.

Norwood 5 and 6: how should coverage be prioritized?

Selected patients with advanced loss can be considered for surgery. In the published series of men with stage 5 to 7 loss, plans were grouped by what they set out to cover: a forelock, the front, front plus midscalp, the crown, or something broader. That was one center's selected patients, so it shows what gets planned, not what everyone at these stages can expect.

Limited or poor-quality donor hair restricts both the area that can be covered and the density you can get. One Hair Restoration Network poster who put themselves at stage 6 to 7 wrote that they fully understood the hairline would have to be conservative and didn't expect their old density back. Ask about that compromise before you agree to it: would the front get priority, what would the crown look like untreated, and would you still want surgery on that plan?

Norwood 7: what can a surgeon realistically offer?

Stage 7 alone isn't an exclusion. Selected stage 7 patients appear in the advanced-loss series, and the goal still needs adequate donor hair and expectations that match what the examination supports.

An r/HairTransplants poster who put themselves at stage 7 with thin donor hair reported conflicting consultations: one rejection, and other clinics offering surgery with reservations about the result. The reasons behind each answer are what you need. Ask each clinic what its donor findings were and what its plan would leave untreated.

If you've had surgery before, say so and ask what donor hair remains usable. The coverage on offer might fall short of what you want. Ask about waiting or another approach before committing.

What does your stage mean for grafts and sessions?

A graft estimate describes how much donor hair the plan proposes to move. For the numbers, see how many grafts you may need. The stage alone doesn't give you a personal estimate, because it doesn't capture the measured area, the hair remaining in it, the donor findings or the hairline you're aiming for.

Ask for the estimate to say which areas it covers. Then ask what would change it after an in-person examination.

After surgery, ask how the clinic will record your original pattern and the treated areas. A transplant is not prevention. The native hair around the grafts can keep thinning, so the picture keeps changing.

What determines whether the plan needs more than one session?

Published practice guidelines weigh patient health and comfort, anesthetic exposure, how long grafts spend outside the body and team fatigue, and they favor a second procedure over one excessively long day when a lot of work is needed. The trigger is the amount of work, and the stage doesn't set that on its own.

So ask whether a later procedure is part of the proposed coverage plan or only a possibility if further loss occurs. A RealSelf reviewer who put themselves at stage 6 to 7 had the front and middle done across two procedures and still wanted a third for the crown. That was their plan and their priorities. Yours comes from your donor supply and the areas you want covered.

Why might two clinics propose different plans for the same stage?

Compare what each proposal actually includes before you compare totals:

• Are both treating the same areas?
• Are they proposing the same hairline and density?
• What donor findings support each estimate?
• What do they assume about future loss?
• What does each planned session include, and what remains undecided?

Then ask each surgeon to explain the difference. A graft total without the treatment areas and assumptions behind it gives you nothing to compare.

What if you are not ready for a transplant?

A clinician may suggest monitoring or medical treatment when the loss is too slight or still moving. The stage alone doesn't pick a medication any more than it books an operation.

Also ask what happens if you can't continue a proposed medication. One HairLossTalk author stopped theirs because of symptoms they put down to it, then worried about continued thinning around an earlier transplant. Ask how monitoring and future treatment would change in that case.

You can also decide against surgery. Our guide to whether a hair transplant is worth it covers that decision. Use the consultation to find out what's being offered, then decide whether it matches what you want.

What to ask at your consultation

Take these with you and ask for the proposed plan in writing:

• What stage and variant describe my pattern, and what diagnosis explains it?
• What shows whether the loss is changing?
• What does the donor examination show, including previous use?
• Which areas would you treat, and which would remain untreated?
• What measurements support the graft estimate?
• Why this session plan, and what could change it?
• What happens if native hair keeps thinning or I can't continue medication?
• What would make you recommend waiting or another approach?

If you want to talk through what you've found, you can contact AsiaPatient. Bring the proposed treatment areas and your unanswered questions. The clinical assessment itself has to come from a surgeon.

Frequently asked questions