The Norwood Scale: Every Stage Explained, with What the Evidence Supports at Each
More than a classification system — a treatment map. Here's what the seven Norwood stages actually mean and which interventions have evidence at each level.
The Norwood scale is the most widely used classification system for male pattern baldness — and the most misunderstood. Knowing your stage isn't about labeling the problem; it's about matching the right response to the right level of loss. Here's the full map, with what the evidence supports at each stage.
01The seven Norwood stages
| Stage | What you see | Evidence-based options |
|---|---|---|
| I | No significant recession — baseline adult hairline | Watchful waiting; start fin early if family history is strong |
| II | Minor temporal recession, triangular areas deepening | Minoxidil + finasteride — early intervention gives best long-term results |
| III | Deep temporal recession, often a widow's peak beginning to go | Min + fin combination; PRP as adjunct; consider FUE consult if plateau |
| III Vertex | Crown thinning begins alongside temporal recession | Same as III; crown responds well to min + fin if caught early |
| IV | Significant frontal and crown loss, bridge of hair between | Medication backbone still useful; surgical consult reasonable if stable |
| V | Bridge thinning, frontal and crown loss merging | Medication for remaining hair; surgical planning for those wanting restoration |
| VI–VII | Extensive loss; only horseshoe fringe remains | Medication for remaining native hair; surgery addresses redistribution only |
Earlier intervention always produces better long-term outcomes. A man who starts finasteride at Norwood II has dramatically more hair to protect than one who starts at Norwood IV. The best time to act was when you first noticed it. The second best time is now.
02The Norwood stage isn't everything
The scale describes pattern and coverage, not density. Two men at Norwood III can have very different hair thicknesses in the affected zones — which changes how treatment looks and what surgical options make sense. Miniaturization mapping (trichoscopy) gives a more complete picture than Norwood stage alone.
03The vertex variant
Some men lose primarily from the crown (Norwood III Vertex, IV Vertex) before significant frontal recession. Others never develop crown loss. This variation is partly genetic and affects surgical planning — the crown requires more grafts for proportional coverage and often yields less satisfying density per graft than the frontal zone.
The prioritization rule: if you're planning surgery and budget or donor supply is limited, frontal and mid-scalp coverage serves daily visual quality of life better than crown coverage. The crown is the last thing other people see; the hairline is the first.
Act at your current stage, whatever it is
Care Bare Rx
Prescription minoxidil + finasterideTelehealth hair-loss intake with prescription minoxidil and finasteride options.
See Care Bare Rx options Paid linkSesame Care
FDA-approved hair meds, telehealthSame-day telehealth visits for FDA-approved hair-loss prescriptions, from $44.
Sesame connects you with providers for FDA-approved, brand-name medications — no compounded products.
See Sesame Care options Paid linkStrut Health
Topical + oral formulasCompounded topical + oral finasteride and minoxidil formulas, prescriber included.
Affiliate disclosure. Male Hair Advice may earn a commission when you use the links marked “Paid link,” at no additional cost to you. We only include providers we believe are relevant to the topic, and commercial relationships never change our editorial assessments.