I
Mild diffuse thinning across the top of the scalp with the part line slightly widened. Frontal hairline preserved. Most common stage at which patients first seek consultation. Usually best treated medically first; surgery rarely needed.
The Ludwig Scale is the standard medical classification for female pattern hair loss — three stages describing diffuse thinning across the top of the scalp with a preserved frontal hairline. Knowing your stage doesn’t tell you what to do; it tells the surgeon what to plan for.
Male pattern hair loss progresses through the well-defined Norwood stages — temporal recession, then crown, then bridge. Female pattern hair loss is different: diffuse thinning across the top of the scalp, often most visible at the part line, with the frontal hairline typically preserved.
The Ludwig Scale (Dr. Erich Ludwig, 1977) describes this pattern in three stages. It’s the standard female-specific classification used by hair restoration surgeons worldwide — and importantly, it distinguishes Ludwig-pattern loss (genuine female pattern, requiring androgenetic treatment) from non-Ludwig patterns that point to other causes (telogen effluvium, alopecia areata, scarring alopecias, thyroid).
Mild diffuse thinning across the top of the scalp with the part line slightly widened. Frontal hairline preserved. Most common stage at which patients first seek consultation. Usually best treated medically first; surgery rarely needed.
More pronounced thinning across the crown, with the part line clearly visible and the scalp showing through under direct light. Hairline still preserved. Surgical candidate if the cause is androgenetic and pattern is stable.
Severe diffuse thinning with significant scalp visibility. Frontal hairline often still intact (which distinguishes Ludwig from non-Ludwig patterns of female loss). Surgery possible but graft demand is high; sometimes combined with non-surgical density solutions.
Ludwig I: Almost always non-surgical. Topical or oral minoxidil, sometimes with oral spironolactone (off-label) or low-dose oral minoxidil. Bloodwork to rule out reversible contributors (thyroid, iron, vitamin D).
Ludwig II: The bulk of female surgical patients. Female restoration with FUE, paired with ongoing medical therapy to preserve surrounding native hair.
Ludwig III: Surgery still possible but requires careful donor management. Sometimes SMP is added to enhance perceived density behind the transplanted area.
Ludwig stage is one input. Bloodwork, hormone panel, family history, and donor density all factor in. The right approach for you is determined in consultation, not by a chart.
Send photos and Dr. Jones will tell you, in writing — what stage, what treatment fits, what’s realistic. Bloodwork or trichology referrals when those come first.