What Is DUPA and Why It Affects Transplant Eligibility DUPA, short for Diffuse Unpatterned Alopecia, is the rare kind of hair loss where even the so-called safe donor zone at the back and sides of the scalp is thinning, which is exactly what makes it such a tricky call for surgery.According to Dr. Mayank Singh, an experienced hair transplant surgeon in Delhi, “DUPA is one of the few conditions where a hair transplant can actively make the situation worse, Read More: https://crownhairtransplant.com/hair-transplant-blog/what-is-dupa-and-why-it-affects-transplant-eligibility/