Guides / Norwood scale & stages

The Norwood Scale: All 7 Stages Explained

Men / October 4, 2026 / 11 min read / StrandScout Team

You found the drawings, picked the one that looks most like you, and now you want to know what the number means. Here is every Norwood stage in plain words, including the 2A and 3V steps the simple charts leave out, and the part the drawings cannot show: what a stage can and cannot tell you.

What the Norwood balding scale is

The Norwood scale, also called the Hamilton-Norwood scale, is a set of drawings that describe the shapes male pattern hair loss usually takes as it spreads. James Hamilton, an anatomist, published the first version in 1951 after examining more than 300 men. Dr. O'Tar Norwood revised it in 1975 using 1,000 adult men, and his version is the one clinics and researchers use today. He wrote that the need for a reproducible classification had grown with the rise of hair transplant surgery: the scale exists to describe a shape two people can agree on, not to predict one man's future.

Pattern hair loss, which dermatologists call androgenetic alopecia, makes follicles on the top of the head shrink over repeated growth cycles, so each hair comes back finer and shorter. The temples and crown are the two classic sites, the stages are the order they usually go in, and the sides and back are spared, which is why stage 7 is a horseshoe.

The 7 Norwood stages, one by one

The descriptions match the free checker, so the words line up wherever you read them.

Norwood 1: no recession

A full, low hairline, corners filled in, and a tight crown swirl with no scalp showing. This is where most teenagers start.

Norwood 2: the mature hairline

Slight, symmetrical recession at the temples, forming a shallow M, with edge hairs as thick as the rest and a full crown. This overlaps with the normal adult hairline most men settle into after their teens, and on its own it is not pattern hair loss. Norwood 2 has the mature-or-receding breakdown.

Norwood 2A: even front recession

The same small amount of loss as stage 2, but as one even band across the front rather than two temple points. Only the shape differs.

Norwood 3: early recession

Deeper, symmetrical temple recession, obvious in a front photo, with finer, shorter hairs along the receding edge and a crown that is still full. This is the first stage dermatologists usually call pattern hair loss, and many men stay here for years. Norwood 3 covers it in detail.

Norwood 3V: vertex thinning

Stage 2 or 3 temples plus a thinning patch at the crown (the V is for vertex, the medical word for the crown), with a wide band of full hair still between them. The crown is often the first thing a helper or a crown photo notices, because you cannot see it in a mirror.

Norwood 4: front and crown

The front has receded further than stage 3 and the crown has a clear bald or thin patch, with a solid bridge of dense hair still separating the two.

Norwood 5: bridge thinning

Both areas are larger and the bridge between them is narrower and thinner. From above, a horseshoe is starting to form. Norwood 4 and 5 looks at the stages where the two areas start to meet.

Norwood 6: bridge gone

Front and crown have joined into one continuous bare area across the top, and the hair at the sides is starting to thin at its upper edge.

Norwood 7: the horseshoe

Only a narrow band of hair around the sides and back remains, ear to ear, and that band may itself be finer than before. Norwood 6 and 7 covers what the horseshoe stages mean for options.

The stages at a glance

The A variants: stages 2A to 5A

Stages 2A to 5A describe loss that marches straight back from the front as one even band, with no separate bald spot at the crown and no temple points. Norwood gave the A pattern two main features: the front recedes without leaving an island of hair in the middle, and the crown does not thin at the same time. It changes nothing about what to do.

Balding stages vs receding hairline stages: are they the same thing?

People search for "balding stages" and "receding hairline stages" as if they were two scales. They are not. The Norwood scale is the one most dermatologists use for men, and a receding hairline is simply the front half of it. Think of two tracks that eventually meet:

• The hairline track. Stages 1, 2, 2A, 3 and the A variants are all about the front. The guide to receding hairline stages walks this track with photos.
• The crown track. Stage 3V is where the crown joins in, and from stage 4 the scale describes both zones and the bridge between them. A balding crown can run ahead of the hairline, and it is the zone most men miss.

Look at the front, then the crown, and take the higher of the two.

Balding phases: how fast does the scale move?

A stage describes where you are today, not how far or how fast you will go. The American Hair Loss Association puts it plainly: the scale is not "a prediction of how far an individual will eventually progress". Many men sit at stage 2 or 3 for decades.

What the numbers do say is that time matters. In Norwood's 1,000 men the share with pattern loss rose with age, and he noted that the effect of time continued even in later years. The American Hair Loss Association reports that about two thirds of men have noticeable loss by 35, about 85 percent by 50, and about a quarter begin before 21. None of that tells you your own pace; only measuring does. Scalp hair grows about half an inch a month, so one month is noise, 3 months is the first honest comparison, 6 months gives a reliable direction, and 12 months shows whether the pattern is stable or progressing.

Why two people can read the same head differently

In a 2009 study, 23 raters staged the same 43 photographs on the Norwood scale, and their agreement was only moderate. The authors called the reliability unsatisfactory even in the hands of expert appraisers, and when the same raters scored the photos again 3 months later, they often disagreed with themselves. Photos add their own noise: wet hair, a fresh short haircut, flash and a forward head tilt all show more scalp.

So a read that flips between two neighboring stages from one month to the next is normal noise, not a change. The fix is consistency: same light, same distance, same angle, same hair, every month.

Which Norwood stage is still normal?

Stage 2. Between roughly 17 and 30, most men's hairlines move up a small amount, about half an inch, and the corners round off, then stay put. That is a mature hairline, it reads as Norwood 2, and a dermatologist can confirm it in one visit if you are unsure. Pattern loss can start in the same years, and on a single photo the two look alike. The differences show up over time and at the edge:

What each stage means for your next step

The stage itself is not the verdict. The verdict comes from the comparison with your earlier photos, and a red flag always wins over a stage.

• Norwood 1, 2 and 2A: Looks stable. Keep the monthly photo habit so there is always a baseline.
• Norwood 3 and 3V: Keep watching. Nothing to act on yet; the 3-month comparison will say more than any single check.
• Norwood 4 and up: book a dermatologist in the next few weeks, whether or not the stage has moved. Options work best when started earlier, because they are better at keeping hair than at bringing back hair that has gone.
• Any stage with sudden, patchy, painful or itchy loss: See a dermatologist this week. Those are not pattern hair loss, and a dermatologist can confirm the cause.

The options a dermatologist may discuss include topical minoxidil, oral finasteride for men, and, once a pattern is stable, a hair transplant. Pooled trials find minoxidil slows loss and modestly increases hair count; finasteride slows loss and often thickens the crown, with a weaker effect at the front; both work only while continued. A dermatologist decides whether any of this fits you, and how much and how often.

What to do this month

1. Take the four photos today (front, left temple, right temple, crown) in daylight or under a plain ceiling light, with dry, unstyled hair. The photo guide shows the angles.
2. Note the date, the stage you picked, and any trigger in the last 3 months: illness, surgery, a crash diet, a new medication or a very stressful stretch.
3. Ask your family who started losing hair early, on both sides.
4. Do a gentle pull test: about 40 to 60 hairs, fingers slid firmly from scalp to ends, in 2 or 3 spots. Two hairs or fewer each time is normal.
5. Loosen any style, hat or helmet that pulls or rubs at the hairline.
6. Do not start or stop any medicine on your own; write down questions for a dermatologist instead.
7. Set a reminder for the same day next month.

When to see a dermatologist

This week:

• Sudden, heavy shedding over a few weeks, with hair coming out in handfuls.
• Smooth, round or oval bald patches that appeared within weeks.
• A scalp that is red, painful, burning, itchy, scaly or has pustules where hair is thinning. Pattern hair loss does not normally hurt or itch.
• A shiny, smooth bald area with no visible pores, which can mean scarring.
• Hair loss with tiredness, unexplained weight change, or feeling cold or hot all the time.
• Hair loss that began within a few months of a new medication. Do not stop it on your own; ask the prescriber.
• Loss of eyebrows, eyelashes or body hair along with scalp hair, or any noticeable hair loss in a child.

In the next few weeks:

• The front hairline has moved a full stage, or temple recession has deepened on both sides, against photos from 3 months ago.
• A crown patch visible from above and larger than 3 months ago.
• Finer, shorter hairs spreading across the top while the sides stay full.
• You are under 25, a parent or sibling lost hair early, and you can see early recession.
• You are at Norwood 4 or above, or you want to know which options fit your stage.

A board-certified dermatologist can see miniaturized hairs with a magnifier that a photo cannot. Bring your photos: a consistent 3-month pair says more than memory.

The Norwood scale is a shared language, not a forecast. Find your stage, write it down, then start comparing photos, because the stage you are at matters far less than whether it is moving. The Norwood scale and stages hub has a page for every step. The StrandScout app reads your four monthly photos against the same scale and gives you one of these four verdicts.

StrandScout guides are general information, written from the medical sources named above. They are not medical advice and they can be wrong for you. StrandScout gives an AI estimate from photos, not a diagnosis. A dermatologist can confirm what is going on. If you notice sudden heavy shedding, round bald patches, or a red, painful or itchy scalp, see a dermatologist this week.