What are the side effects of hair transplantation? is there any age limit for hair transplantation?

i am 26 years of age. about 3 months ago i loss my hair on my scalp that cover just a finger tip. after treatment that was not upto standard i loss my hairs that covers now about area 1 inch in lengh and width. and the skin has been damaged also. what should i do? no other medicine suits to me. now i want to restore my hairs through hair transplantation.

What are the side effects of hair transplantation? is there any age limit for hair transplantation? i am 26.?

If your male, shave it all off! It looks good. Besides, woman are always rubbing my clean shaved head.