Exploring how the essentialism of the gender binary impacts on clients of all genders, this ground-breaking book examines how historical, social and culturally gendered trauma emerges in clinical settings. Weaving together systemic ideas, autoethnography, narrative therapy and somatic experiencing, the book charts the history of the gender binary and its roots in colonialism, as well as the way this culture is perpetuated intergenerationally, and the impact this trauma has on all bodies, gender identities and experiences. Featuring clinical vignettes, exercises and reflexive practices, this is an accessible and intersectional guide for professionals to develop their understanding of gender-derived trauma for supporting clients. Highlighting the importance of applying a trauma-informed approach in practice, this book provides insights as to how we can work towards collective healing, for future generations and for ourselves.