Hair restoration surgery (HRS) is typically a safe outpatient or office-based procedure when physicians follow high ethical standards and uphold community practice standards. Patients' clinical outcomes are mostly operator dependent, and temporary and permanent complications rarely occur. Follicular unit excision (FUE) donor harvesting, in particular, is a challenging harvesting technique requiring a long learning curve, physical stamina, higher than average hand-eye coordination and manual dexterity. The types of complications associated with FUE are comparable to linear strip excision (LSE). Similar to LSE donor harvesting, FUE complications may occur irrespective if standard precautions are followed by the physician. As in any skin and scalp procedure, injuries and poor cosmetic outcomes occur despite appropriate preoperative precautions and intraoperative technique. In increasing and greater instances, however, FUE complications are observed when the physician fails to follow hair restoration practice standards and routine surgical precautions. Physician induced, or iatrogenic complications occur more often when untrained licensed surgeons perform HRS, and who fail to meet practice standards and best practices. In the last decade, physician-influenced FUE complications, or iatrogenic cause of FUE injuries are increasingly observed which results in poor aesthetic outcomes. Higher than average FUE complication rates occur in cases involving inadequately trained physicians, as well as in cases where improper delegation of the FUE hair transplant procedure is performed by unlicensed and untrained individuals. In this chapter, we described commonly encountered HRS complications, as well as physician influenced, or iatrogenic causes of FUE complications.
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