This overarching text, intended both for mental health practitioners-in-training and for practicing clinicians, focuses on the impact of stress, crisis, trauma, and disaster on diverse populations across the lifespan as well as on effective treatment strategies. The second edition is newly grounded in a "trauma scaffold," providing foundational information that therapists can build upon, step-by-step, to treat individuals affected by more complex trauma events. This resource newly addresses the mental health implications of COVID-19, which has had an enormous impact on multitudes of people since the beginning of the pandemic, its repercussions likely to continue for some time into the future. The text also is updated to provide the most recent diagnostic information regarding trauma in the DSM-5. Two new chapters address the confluence of crises related to anthropogenic climate change and the effects of mass violence. This unrivalled resource emphasizes stress management and crisis intervention skills as important building blocks for working with more complex issues of trauma and disaster. It underscores the idea that trauma must be approached from multiple perspectives and in multiple dimensions encompassing individual, community, societal, and systemic implications along with multicultural and diversity frames of reference. The text integrates the latest findings from neuropsychology and psychopharmacology with an emphasis on Polyvagal Theory. Additionally, the text highlights the importance of clinical supervision in trauma care and examines ethical dimensions and the need for self-care among trauma counselors. Purchase includes digital access for use on most mobile devices or computers. New to the Second Edition: Key Features: