The Ludwig scale, grades I to III
Female pattern hair loss seen from above. The centre part widens into a zone that broadens toward the front — the "Christmas tree" pattern — while the band of hair at the frontal hairline stays. Grades I, II and III are the same pattern at increasing severity: hair thins and scalp shows through it, rather than an area going bald.
Free to use anywhere, including commercially, with a visible link back to this page. Licensing without the credit line.
Every number printed on this figure, and where it came from
Each quantity the diagram prints, the sentence it was taken from, and the guide that sentence is in. The build refuses to publish if one of these sentences is no longer in the guide it names.
| Value | What it is, and the sentence behind it | Source guide |
|---|---|---|
| three grades | The Ludwig scale grades female pattern hair loss into three grades “The Ludwig scale classifies severity into three grades” | Women's Hair Loss: The Complete Guide |
| 30% | Share of women with pattern hair loss who do not fit the Ludwig scale “Approximately 30% of women with pattern hair loss don't fit the Ludwig scale” | Male vs Female Pattern Hair Loss: Key Differences Explained |
| 40 / 45 / 15% | Ludwig I / II / III split among the women in the transplant series “40% were Ludwig I, 45% Ludwig II, 15% Ludwig III” | Female Pattern Hair Loss: Treatment Options That Work |
| 751 women | Size of the series the split comes from, and what kind of series it is “A 31-year study of 751 women with FPHL who underwent follicular unit transplantation (FUT) found” | Female Pattern Hair Loss: Treatment Options That Work |
| 31 years | How long the transplant series ran, printed alongside its size “A 31-year study of 751 women with FPHL who underwent follicular unit transplantation (FUT) found” | Female Pattern Hair Loss: Treatment Options That Work |
Where this figure appears
Women's Hair Loss: The Complete Guide · Female Pattern Hair Loss: Treatment Options That Work