Q: I just started to lose my hair but it’s just in one spot, like a circle on the left side of my head. Do you ever do a hair transplant just into a bald spot and not the whole head? — D.F., Esher, U.K.

A: It is possible to have a hair restoration procedure into a single bald spot. However, it would be most beneficial to first determine the cause of the condition.

Bald spots caused by alopecia areata (an autoimmune disease) are best treated with injections of steroids into the scalp, rather than with a hair transplant. In fact, the transplanted hair can be rejected in patients with this condition.

Traumatic scars (i.e. from an accident) can be treated with follicular unit hair transplantation as the hair grows quite well in scar tissue, as long as the scar is not thickened (hypertrophic).