Whether autologous hair transplantation is suitable depends less on the area of hair loss and more on evaluating the available donor hair for transplantation and future progression together[1]. If the density, thickness, or stability of hair in the back of the scalp is insufficient, it may not be possible to fill the desired area in a single procedure[2].
What to Look for in Donor Hair?
During consultation, the hair follicle density, number of hairs, thickness, and quality in the back and sides of the scalp are assessed[1]. Density is measured with specialized equipment as the number of hair follicles per unit. With the same number of grafts, thick and thin hairs will produce different perceived density[3].
Can the procedure be performed while hair loss is still progressing?
With ongoing AGA, existing hairs around the transplanted area may thin later. Guidelines emphasize the importance of considering long-term results with medically controlled or naturally stabilized AGA[4].
Is it better for younger people to have the procedure done earlier?
Suitability is not determined by age alone. If only the current hairline is lowered, additional donor hair may be needed later when the area behind it thins. Considering the patient's desires, degree of progression, and the quantity and quality of available donor hair together is fundamental to surgical planning.[1].
With extensive hair loss, which area should be prioritized?
Since donor hair is not unlimited, it is not always possible to achieve the same density in the hairline, frontal area, and crown[2]. Whether to prioritize the front area that affects facial appearance or to supplement the part line and crown depends on hairstyle preferences and patient wishes.
Confirmation needed during consultation to determine suitability
After diagnosing whether the cause of hair loss is AGA or another alopecia or scalp condition, surgery is considered. It is necessary to confirm with the physician the donor measurement, progression prediction, history of medical treatment, and room for future additional surgery.
- 1Bolognia JL, Schaffer JV, Cerroni L. Dermatology. 5th ed. Chapter 157: Hair Restoration.
- 2Handbook of Plastic Surgery. Chapter 116: Hair Restoration.
- 3Grabb and Smith's Plastic Surgery. Chapter 60: Hair Restoration.
- 4Kanti V, Messenger A, Dobos G, et al. Evidence-based (S3) guideline for the treatment of androgenetic alopecia in women and in men — short version. Journal of the European Academy of Dermatology and Venereology. 2018. doi:10.1111/jdv.14624