Dr. Littman is a physician-scientist whose research is focused on gender dysphoria, the experiences of people who desist (or re-identify) after identifying as transgender, and people who detransition after gender transition. She is known for coining the phrase, “rapid-onset gender dysphoria” (also called ROGD) to describe a phenomenon that has been observed by clinicians and parents, and has been acknowledged by several detransitioners. Currently, ROGD is not a formal diagnosis. However, the evidence supporting the ROGD hypotheses has increased since the 2018 publication of the research. Read more here