Four fixed points for dermoscope in male androgenetic alopecia: A way to diagnosis and monitor therapy effect.

Dear Editor, Androgenetic alopecia (AGA) is the most common form of alopecia in men. Therefore, temporal angle, baihui acupoint, and hair whorl represent different hair loss regions in male AGA, while occipital tuberosity is the marker of no hair loss region. [Extracted from the article]