The Ludwig Scale: Understanding Female Hair Loss Stages

Men's hair loss is usually mapped on the Norwood scale — a receding hairline and crown. Women's loss behaves differently, so it has its own map: the Ludwig scale. Instead of receding, female pattern loss typically shows as diffuse thinning across the top of the scalp, most visible as a widening parting, while the frontal hairline usually stays intact.

The three stages

The Ludwig scale divides female pattern loss into three grades:

• Stage I: mild thinning along the parting — often only noticeable to you, easily disguised with styling.
• Stage II: the parting widens noticeably and the scalp becomes visible through the hair on the crown.
• Stage III: diffuse thinning across the whole top of the scalp, with see-through density even when styled.

Why the stage matters for treatment

At stage I, medical therapy and PRP can often stabilise and visibly improve density without surgery. At stages II and III, a transplant can restore meaningful density — and because the frontal hairline is intact, the work can frequently be done without shaving the head, placing grafts between existing hairs.

One caveat matters more than the scale itself: not all diffuse thinning is female pattern loss. Iron deficiency, thyroid disorders and post-illness shedding can look identical. Diagnosis always comes first.

Where do you stand?

Part your hair in bright, direct light and compare the width of the parting at the front, middle and crown. Photograph it monthly from the same angle — change over time tells you far more than any single look in the mirror. And when you are ready, a consultation gives you a measured answer instead of a guess.