The Norwood Scale Explained: How to Know How Much Hair You've Actually Lost

The Norwood Scale is the standard classification system dermatologists use to assess male pattern baldness. Here's where you likely fall — and what to do about it.

Every man who's Googled "am I going bald" has landed on the Norwood Scale at some point. It's the classification system dermatologists have used since 1975 to categorize the stages of androgenetic alopecia (male pattern baldness), and despite being nearly 50 years old, it remains the standard reference in clinical practice.

Understanding where you fall on the Norwood Scale matters because it affects which treatments are most appropriate, what results you can realistically expect, and how urgently you should act.

The Stages

Norwood 1 — No Significant Hair Loss

A full, juvenile hairline with no recession. This is the baseline — if this is you, you're not experiencing male pattern baldness (at least not yet). Some men maintain NW1 their entire lives. Lucky them.

Norwood 2 — Slight Recession

Minor temple recession creating a slight "M" shape. This is extremely common in men over 25 and is often considered a mature (adult) hairline rather than active hair loss. Many dermatologists consider NW2 within the range of normal and don't necessarily recommend treatment unless progression is observed.

Norwood 3 — Deepening Recession

Significant temple recession forming a clear M-shape. This is typically the first stage considered clinically significant for androgenetic alopecia. The frontal hairline has receded noticeably, and most men begin to feel self-conscious at this point.

Treatment response: Excellent. This is the ideal time to start finasteride — early intervention produces the best outcomes. Men who start treatment at NW3 have the highest probability of maintaining their current hair and experiencing regrowth.

Norwood 3 Vertex — Crown Thinning Begins

Similar to NW3 at the hairline, but with the addition of thinning or a developing bald spot at the crown (vertex). The crown is particularly responsive to minoxidil treatment.

Norwood 4 — Significant Loss

Further hairline recession with expanding crown thinning. A band of hair still separates the two areas, but the overall hair density is visibly reduced. Treatment can still slow progression and produce partial regrowth, but expectations should be tempered compared to NW2-3.

Norwood 5 — Merging

The band of hair between the receding hairline and expanding crown spot thins significantly. The two areas begin to merge. At this stage, treatment is primarily about slowing further loss and maintaining what remains.

Norwood 6 — Extensive Loss

The hairline and crown areas have fully merged, leaving a horseshoe pattern of remaining hair on the sides and back. Finasteride and minoxidil may still slow progression, but significant cosmetic regrowth is unlikely without surgical intervention (transplant).

Norwood 7 — Advanced Loss

The most extensive stage. Only a narrow band of hair remains around the sides and back. This stage is typically beyond the reach of pharmaceutical treatment for meaningful cosmetic improvement. Hair transplant surgery is the primary option, though the limited donor area presents constraints.

Treatment Recommendations by Stage

How to Assess Yourself

Stand in front of a well-lit mirror and examine your hairline from the front. Then use a handheld mirror or phone camera to check your crown from above. Compare what you see to the descriptions above. If you're between stages, that's normal — hair loss is a continuum, not a series of discrete jumps.

For a professional assessment, telehealth platforms can evaluate your photos and give you a Norwood classification as part of the consultation process.

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