Asymmetry of the Receding Hairline in Men With Early Androgenetic Alopecia.

Background: The Norwood classification system is commonly used to ascertain the progress of androgenetic alopecia (AGA) with a robust and quick assessment, but it lacks precision in the frontal region, notably during the onset of male pattern hair loss.

Objective: Due to the ongoing technical improvement in restorative hair transplantation practices, we aim to develop simple quantitative methods for measuring the progression of AGA.

Methods: Here, we used a quantitative system to evaluate the progress of AGA of the frontal receding hairline in a case study with 41 patients.