Norwood Stage 4 shows more severe frontotemporal recession than Stage 3, together with sparse or nearly absent hair at the vertex (crown). Crucially, a bridge of moderately dense hair still separates the frontal region from the crown. The presence of that bridge is the defining feature that distinguishes Stage 4 from later stages.
Stage 4 indicates that androgenetic alopecia has progressed substantially, but it still gauges severity rather than being a diagnosis in itself. Medication remains worthwhile here, because preserving the remaining follicles and the hair of the bridge zone matters for maintaining appearance over time. Evidence-based options such as minoxidil and finasteride are commonly used to slow further progression; effects appear over 4-12 months and require continued use. Finasteride and dutasteride carry a risk of fetal birth defects, so anyone who is or may become pregnant must not handle broken tablets.
Stage 4 is also a point where transplantation is actively considered. An illustrative planning range of roughly 2,000-3,000 follicular units is sometimes cited, though the actual number depends on donor density, hair characteristics, and goals. Transplants aim for a natural-looking density (around 30-50 follicular units/cm²) rather than native density (about 80-100/cm²), and because donor supply is finite, restoring the face-framing frontal region is often prioritized.
Grafts at this stage
A transplant at this stage may need roughly 2,000–3,000 grafts (varies with donor and hair caliber).
Try the free self-check →Sources: Patterned hair loss review (PMC) ↗
FAQ
Is medication still worthwhile at Stage 4?
Yes. Preserving the remaining follicles and the "bridge" of hair between the front and crown matters for appearance, so medication still has a role. Minoxidil and finasteride can help slow further progression. They do not, however, guarantee full reversal of hair that is already gone.
Can a transplant restore Stage 4 to my former density?
Transplants target a natural-looking density rather than native density. Because donor follicles are finite, it's difficult to fill every area to original thickness, and the frontal region is usually prioritized. A specialist will outline a realistic range after examining your donor area.
If I get a transplant, can I stop the medication?
Usually not. Transplanted hair is donor-derived and permanent, but androgenetic loss in your native hair keeps progressing, which can look unnatural as hair recedes around the grafts. That's why ongoing medication is often recommended even after a transplant.
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⚠️ When to see a doctor — don’t self-treat
- Sudden patchy or circular bald spots
- Redness, scaling, pus, pain or itch (possible scarring alopecia — treat urgently)
- Broken hairs or rapid loss
- Loss with body-wide signs (weight loss, fatigue, cycle changes, acne, extra hair)
- Loss right after a new medication
- Any hair loss in a child