What Is the Cause of DUPA

Started suffering sudden and rapid hair loss, most noticeably on the sides and back of head.. Thought it was telogen effluvium at first but it appears the hairs are miniaturizing rather than just shedding (hairs are coming in thinner and scragglier and not growing as long). Can DUPA be caused by anything other than androgens? If caused by stress or hormonal imbalance or thyroid, if the issue is addressed can the miniaturization be reversed? Or can only shed hairs from TE be grown back to normal?

Most men who say that they have DUPA, don’t have it. As the doctor who first identified DUPA, I don’t believe that anyone knows what causes it. It may be uniquely genetic because it is similar to some women with diffuse alopecia which presents similarly to men with DUPA.