Mapping out your balding

This is an example of a person who mapped out his scalp to determine the degree of miniaturization in the different areas. The key is not only to identify the areas where it comes from, but to see enough hairs roots so that I can count the degree of miniaturization.  For DUPA, this is critically important as shown in this link for a DUPA patient:  https://baldingblog.com/classic-case-of-dupa/