Retrograde Alopecia and the Lower Nape Donor Area

Definition and clinical context

Retrograde alopecia describes a thinning pattern that may extend upwards from the lower nape and around the ears. In some people, these regions fall outside conventional safe donor boundaries.[1][2]

Biological and surgical significance

Progressive thinning at the margins can affect the durability of transplanted coverage and the visibility of pinpoint donor scars.[1][2]

Assessment and planning

The nape hairline, areas around the ears, shaft diameter and miniaturisation are examined at several trichoscopic sites. Wearing the hair short can increase the cosmetic visibility of thinning and scars.[1][2]

Limits of the evidence

Recent publications discuss individual donor boundaries, but very long-term safety of extended harvesting has not been established for every patient.[1][2][3]

KSD planning note

The lower nape and periauricular boundaries are recorded separately. Planning considers potential progression as well as present density, and the patient's preference for short hairstyles is discussed.

Topic-specific questions

Can every lower-nape hair be used as donor hair?

No. Progressive thinning and future visibility need assessment at the margins.

Why does hair length matter?

With less coverage, both thinning and the pinpoint marks of FUE can become more noticeable.

References

For medical information; not a substitute for an individual examination.