Use this free Norwood scale test to check your hair loss stage. Pick the illustration that looks most like your hair from above. Men use the Norwood (Hamilton–Norwood) scale; women can switch to the Ludwig scale.
The Norwood scale stages
- Stage 1: no significant recession.
- Stage 2: slight temple recession (mature hairline).
- Stage 3: deeper M- or U-shaped recession; first stage of clinical balding.
- Stage 4: recession plus a thinning crown, separated by a band of hair.
- Stage 5: the band thins as both areas grow.
- Stage 6: the band is gone; one large area of loss.
- Stage 7: only a horseshoe of hair remains at the sides and back.
The Ludwig scale for women
Female pattern hair loss usually thins the top of the scalp while the front hairline stays. The Ludwig scale has three stages: mild thinning (I), moderate thinning with a wider part (II) and extensive thinning on top (III).
Frequently asked questions
What is the Norwood scale?
The Norwood scale, also called the Hamilton–Norwood scale, is the most widely used system for classifying male pattern hair loss into seven stages, from no recession (stage 1) to only a horseshoe of hair remaining (stage 7).
At what Norwood stage should I see a doctor?
Stage 3 is often considered the start of clinical balding, but it is worth seeing a dermatologist as soon as you notice your hairline or crown changing. Treatment usually works best early.
Is a mature hairline the same as balding?
Not always. A Norwood 2 mature hairline is common in adult men and can stay stable for years.
What causes sudden or patchy hair loss?
Sudden shedding, patches or loss with itching, pain or scaling are not pattern hair loss. They can be caused by stress, illness, nutrition, thyroid problems or scalp conditions, so see a dermatologist.
Can women use the Norwood scale?
Women usually use the Ludwig scale, because female pattern hair loss thins the top of the head rather than causing a receding hairline. This tool lets you switch between both.
Sources
WebMD: What is the Norwood scale? · Ludwig scale (Wikipedia)
Related free tools
This free tool is for general information only and is not medical advice.