What causes scarred skin in the recipient area after a hair transplant?

It is not common to have a "disfigured" skin or scarring in the recipient area after your hair transplant surgery.  There is no way to tell what is going from an Internet post.  It is best to see a doctor for an examination.

Recipient areas post hair transplant can occur due to inadvertent use of pre slit technique or use of larger bore needles to make slits.
Recipient area scarring occurs around the point of implant where bores are made. Overzealously close packing of hairs in order to achieve high density not only causes tissue scarring but also impairs hair growth.
Risk of having a disfigured skin following hair transplant is very low with advances in hair transplant methods. Its advisable to check for the presence of cicatricial alopecia before considering a hair transplantation.
Hope this helps.

Without seeing a picture of what you are talking about it is impossible to give you an opinion. Scars in the recipient site can be the result of the surgical instruments used by the surgeon or the techniques that he used