This guide summarizes the latest research and translates it into practical treatment strategies for the best clinical outcomes. Designed for daily use in the clinical setting, it serves as a source of information, quick to access and easy to understand and it should be of interest to psychiatrists, residents and medical students, psychologists and mental health professionals. Anxiety-related illnesses including panic disorder, obsessive-compulsive disorder, generalized anxiety disorder, post-traumatic stress disorder, social phobia and specific phobia are featured. The discussion of each disorder includes information on aetiology, diagnosis and differential diagnosis, course and prognosis, biological and psychological theories, medications and interventional treatments and psychotherapeutic treatments.