Concise answer
A weak or diffusely thinning donor area can limit transplant suitability, safe graft numbers and achievable coverage. Surgery should not be planned until donor stability and calibre are examined.
Removing too many follicles from low-density donor tissue can leave visible thinning while still failing to create adequate recipient coverage.
A conservative plan may reduce the treated area, stage treatment or recommend a non-surgical pathway when donor risk is too high.
When evaluation may help
Specialist assessment is essential after previous overharvesting, with visible donor scalp or when thinning extends into the back and sides.