How Can Necrosis Occur After a Hair Transplant if Antibiotics Are Used?

Dear Doctor,

i would like to ask you about necrosis and skin infection. Since each patient is given a post-op course of antibotics, how can this happen?
i thank you in advance.

There is no connection between necrosis (this is a vascular problem to the skin) and infection (this is something that can happen after necrosis occurs, or can happen without necrosis).

If you have necrosis, tell me a bit more about it: When after the surgery did it happen? What was the size of the necrosis? Where was it located (donor or recipient area)? Did you have FUE of FUT. Without this information and some good photos, there is little help I can offer.