Norwood 4 hair loss — with significant frontal recession, mid-scalp thinning, and the beginning of crown involvement — represents one of the most common stages at which patients decide to have a hair transplant. Planning for Norwood 4 requires balancing coverage of the current loss against the donor supply needed for potential future progression.
The area requiring coverage at Norwood 4 is substantially larger than at Norwood 2 or 3. The frontal hairline, the temple recession, and the mid-scalp area all need grafts, and the crown may also require attention depending on the specific pattern. Total graft requirements typically range from 2,500 to 4,000 grafts for a comprehensive single-session result.
The future loss consideration is particularly important at Norwood 4. Many patients at this stage have not yet reached their final Norwood Stage — some will progress to Norwood 5 or 6 over the following decade. Using the entire donor supply to achieve maximum density at Norwood 4 leaves no reserve for addressing future loss, which can result in an incongruous appearance as native hair continues to recede around the transplanted area.
A two-phase approach is often optimal for Norwood 4 patients under 40: a first procedure addressing the frontal hairline and mid-scalp, with medical therapy protecting remaining native hair, and a second procedure in five to ten years addressing crown loss and any further mid-scalp thinning that has occurred despite medical therapy.
The hairline height at Norwood 4 should be planned conservatively enough to remain appropriate as the patient ages — a hairline placed very low on a 35-year-old looks increasingly incongruous as they reach their fifties.
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