The Norwood scale sorts male pattern hair loss into seven stages. Stages 1 and 2 are normal hairlines, stage 3 is where clear balding starts, and stages 4 to 7 are progressively more advanced. To find yours, compare how far your temples have receded and how thin the crown is against the stages below.
Want to tap through them instead? Use the Norwood scale checker below. This guide is the explanation behind it: what each stage looks like, how to tell Norwood 2 from 3, and what to do next. The scale describes how far loss has gone, not why, so it is a tracking aid and not a verdict. You can also track your hairline with photos over time.
- •The Norwood scale sorts male pattern hair loss into seven stages. Stages 1 and 2 are normal hairlines, and stage 3 is where clear balding starts.
- •Stage 2 recession is slight and limited to small triangles at the temples. Stage 3 is deeper, symmetrical and forms an M shape. Stage 3 vertex means the crown thins first.
- •It tracks how far loss has gone, not why. Photos in the same light every two to three months show whether you are moving between stages.
- •Finasteride and minoxidil are the main treatments, work only while used, and are a doctor's call. Treatment holds more hair when it starts early.
Where the scale comes from
The scale is often called the Hamilton-Norwood scale. Hamilton described patterns of male hair loss in 1951, and Norwood refined them in 1975 into the classification doctors use today: stages I to VII, plus a separate A series. Norwood's report drew on 1,000 white adult men and noted that hair loss keeps advancing with time, even in later years.
Norwood scale stages at a glance
- Stage 1. No significant loss or recession. The hairline sits across the forehead as it did in your teens.
- Stage 2. Slight, triangular recession at the temples. This is the adult or mature hairline, and it is normal.
- Stage 3. The first stage of clinically significant loss. The recession at the temples is deep and symmetrical, and those areas are bare or thinly covered, forming an M shape.
- Stage 3 vertex. The hairline is no worse than stage 2, but there is real thinning at the vertex, the crown.
- Stage 4. More recession at the front, plus sparse or missing hair at the crown. A band of moderately dense hair across the top still separates the two areas.
- Stage 5. The band across the top gets narrower and sparser, and both bald areas grow.
- Stage 6. The bridge of hair is gone or very thin, so the front and crown merge into one large bald area. Hair remains at the sides.
- Stage 7. The most advanced stage: only a narrow horseshoe of sparse hair around the sides and back.
Norwood 2 vs Norwood 3: how to tell
This is the most common question, because it is the line between a normal hairline and the start of pattern loss.
In stage 2, the recession is slight and confined to small triangles at the temples. Hairs are still present in them, and the front edge stays fairly level across the forehead. In stage 3, the recession cuts deeper. It is symmetrical, the temples are bare or sparse, and the hairline forms a clear M.
A mature hairline settles into stage 2 and stays. The test is time, not a single look. Take front-on photos in the same light a few months apart. If nothing has moved, you are likely at a mature hairline. If the temples keep retreating, you are heading into stage 3. Our guide to a mature vs receding hairline walks through that comparison.
Norwood 3 vertex: when the crown goes first
Not every man loses the temples first. In 3 vertex, the front hairline is still at stage 2 or only mildly into stage 3, while the crown thins. You may notice a widening patch of scalp at the back in photos or from a comment by someone behind you. If that is your worry, read the full guide to a thinning crown.
The A pattern, a less common route
Norwood also described a type A series. Here the whole front hairline moves back evenly, in a straight line, without the M shape and without crown thinning. In a community sample of men aged 18 to 49, 12% had this predominantly frontal pattern.
How to find your stage
One look in the mirror will not do it. Use photos:
- Same room, same light each time
- Dry hair, combed straight back
- Shots of the front, both temples, the top and the crown (use two mirrors or ask someone to help with the crown)
- Repeat every two to three months
- Compare against the stages, not against other men
Then tap through the checker below to find the closest match.
Norwood scale checker
A mature hairline, shifted back slightly at the temples. This is normal and most men reach it.
How fast do you move through the stages?
There is no fixed schedule. Some men stay at a mature hairline for life. Some stop at stage 3 for years. Others move steadily to stage 6 or 7. The signal that matters is movement in your own photos.
Pattern loss is common and becomes more common with age. In a community sample of men aged 18 to 49, 42% had type 3 or greater, rising from 16% of men aged 18 to 29 to 53% of men aged 40 to 49. The NHS adds that it usually runs in the family.
What the Norwood scale cannot tell you
It describes male pattern loss and nothing else. It does not say why hair is thinning. It does not cover even thinning over the whole scalp, shedding after illness (telogen effluvium), bald patches or scarring. If your hair is shedding all over rather than receding, see shedding vs hair loss.
Women are graded on a different system, the Ludwig scale, because the pattern differs: a widening part and thinning over the top rather than a receding hairline. See widening part. Researchers have also proposed a classification that works for both sexes, the BASP classification, which describes the shape of the hairline and the density at the front and crown.
What helps, and what the evidence says
The NHS names finasteride and minoxidil as the main treatments for male pattern baldness. Neither works for everyone, both work only while you use them, and no treatment is 100% effective. Treatment holds on to more hair when it starts early, so a stage 3 that is still moving is a better moment to act than stage 6.
- Finasteride. In two one-year trials of 1,553 men aged 18 to 41, finasteride 1 mg a day beat placebo on hair counts at one and two years, while the placebo group kept losing hair. It is a prescription pill.
- Minoxidil. In a 48-week trial of 393 men, 5% minoxidil beat both 2% minoxidil and placebo on hair counts and scalp coverage ratings. The 5% strength caused more itching and local irritation.
- Dutasteride. A network meta-analysis of 23 studies compared minoxidil, finasteride and dutasteride in men. Dutasteride 0.5 mg a day gave the largest rise in total hair count at 24 weeks, ahead of finasteride 1 mg a day by about 7 hairs per square centimeter. Which drug fits is a prescription decision.
- Hair transplant. A surgical option at later stages that doctors may discuss.
These medicines have side effects and are not for use in pregnancy. Kidney or liver disease and other medicines change what is safe, so talk to a doctor before starting any of them. The NHS also advises seeing a GP before booking a commercial hair clinic.
Biotin does not change a Norwood stage. It helps only a true deficiency, which is uncommon, and it can distort some lab tests. Read what biotin can and cannot do for hair before buying it.
When to see a doctor
A dermatologist can confirm the cause and grade your stage. Book a visit if:
- You are at stage 3 or beyond and still progressing
- The crown is thinning
- Hair loss is sudden or patchy
- The scalp itches, burns, hurts or scales
- Loss started in your teens, or after a new medicine
- You want to start a prescription treatment
If you are just noticing the first changes, start with the early signs of balding.
Frequently asked questions
What are the stages of the Norwood scale?+
Seven. Stage 1 is a youthful hairline and stage 2 a mature one. Stage 3 is the first clear balding, with deep temple recession. Stage 4 and 5 add a bald crown, 6 joins the two areas, and 7 leaves a horseshoe of hair around the sides and back.
How do I know if I am Norwood 2 or 3?+
Stage 2 has slight triangular recession at the temples and a fairly level front edge, a normal mature hairline. Stage 3 recession is deeper and symmetrical, with bare or sparse temples and a clear M shape. Same-light photos months apart show if it is moving.
What does Norwood 3 vertex mean?+
The hairline has receded no more than stage 2, but the crown has real thinning. It is the pattern for men whose crown goes first, and it can progress to stages 4 and 5 over time.
Is a Norwood 2 hairline normal?+
Yes. A mature hairline is normal and many men settle there for good. It becomes a concern if photos show it keeps moving back over months, or the crown starts thinning too.
Can a Norwood 3 hairline grow back?+
Finasteride and minoxidil can slow loss and improve hair counts in many men, but they do not work for everyone and only work while used. Whether treatment is right for you is a conversation for a doctor.
Is there a Norwood scale for women?+
No. Women's pattern loss is usually diffuse thinning over the top with a widening part, graded on the Ludwig scale. Our widening part guide shows how to check it.
How many men reach Norwood 3 or beyond?+
In one community study of men aged 18 to 49, 42% were type 3 or greater, rising from 16% at ages 18 to 29 to 53% at ages 40 to 49. Pattern loss is common and becomes more common with age.
Related
- What hair thinning and shedding mean
- Mature vs receding hairline
- Thinning crown
- Early signs of balding
Sources
- Norwood OT. Male pattern baldness: classification and incidence. South Med J. 1975. PubMed 1188424
- Hamilton JB. Patterned loss of hair in man: types and incidence. Ann N Y Acad Sci. 1951. PubMed 14819896
- Rhodes T, Girman CJ, Savin RC, et al. Prevalence of male pattern hair loss in 18-49 year old men. Dermatol Surg. 1998. PubMed 9865198
- Lee WS, Ro BI, Hong SP, et al. A new classification of pattern hair loss that is universal for men and women: basic and specific (BASP) classification. J Am Acad Dermatol. 2007. PubMed 17467851
- Kaufman KD, Olsen EA, Whiting D, et al. Finasteride in the treatment of men with androgenetic alopecia. J Am Acad Dermatol. 1998. PubMed 9777765
- Olsen EA, Dunlap FE, Funicella T, et al. A randomized clinical trial of 5% topical minoxidil versus 2% topical minoxidil and placebo in the treatment of androgenetic alopecia in men. J Am Acad Dermatol. 2002. PubMed 12196747
- Gupta AK, Venkataraman M, Talukder M, et al. Relative efficacy of minoxidil and the 5-alpha reductase inhibitors in androgenetic alopecia treatment of male patients: a network meta-analysis. JAMA Dermatol. 2022. PubMed 35107565
- NHS. Hair loss. Page reviewed 2024. nhs.uk
This article is for general education and is not medical advice. It does not replace a consultation with a qualified clinician. If a symptom worries you, see a doctor.