Man with Female Pattern Hair Loss or DUPA?

Hi,

What could cause a male to have slightly thinner donor zone hair than on the top of his head. Most people can’t tell I have thinning hair, but the top is a little thicker than the sides. Even my barber has said so. The only strange thing is I have been buzzing my side and back to a number three every 2 weeks for 15 years.

Also, there was a post a few days ago about questioning if dupa was real. I’m confused: what exactly is the difference between a male with a female pattern and someone with dupa? I mean they are discribed exactly alike. Diffuse thinning throughout the whole scalp, but you said fpb is NOT dupa?

If you have thicker hair on the top than on the sides and back, well, I would assume that you were born that way. We could record the differences in densities and confirm that observation if you like, but measurements are the key to the validity of that observation.

Diffuse unpatterned alopecia (DUPA) is generalized thinning of the entire scalp hair and presents that way in men. Women also may have diffuse unpatterned thinning as a presentation of their genetic balding and it may look similar to DUPA in men. Female pattern hair loss may not be uniformly diffuse, while DUPA is more uniformly diffuse (though still unpatterned). Both men with DUPA and women with classic diffuse genetic unpatterned hair loss may have similar mechanisms behind it, but the science is unclear to me as an expert. It is easy to get confused, and I’ve rewritten this response twice trying to make myself more clear. Medicine is a descriptive science and therein lies the problem.