Handbook of Novel Psychoactive Substances (NPS) provides a comprehensive overview of the challenges that clinicians face when dealing with NPS and discusses how the profile of patients and their socio-demographic characteristics frame the serious public health concern that NPS pose. It presents various clinical cases, as well as detailed accounts of symptoms, psychopathology, toxicity, and overall clinical management that NPS require. This handbook brings together a unique collection of chapters written by leading experts in the field, who have felt the need to share their knowledge and experience to improve the clinical practice on NPS and the wellbeing of their patients.