According to various studies conducted around the world, the reason for hair transplantation that is “rejected” by the body is usually Lichen Planopilaris Syndrome (LPP), which develops after transplantation.
LPP is an inflammatory scalp disease that results in patchy alopecia. According to the literature, there were 17 cases of LPP that developed 4-36 months after hair transplant surgery. However, the fact that it occurs in only 17 cases of thousands of hair transplants performed each year proves that LPP can be a problem for a very small percentage.