This book explores the underlying biology associated with the pathology of mental health disorders and the related nervous system. Integrating up-to-date pharmacological and genetic knowledge with an understanding of environmental factors that impact on human biology, The Biological Basis of Mental Health Nursing Third Edition covers topics including brain development, neural communication, neurotransmitters and receptors, hormones and behaviour, genetic disorders, pharmacology, drug abuse, anxiety, schizophrenia, depression, epilepsy, subcortical degenerative diseases of the brain, dementia, developmental disorders, and sleep and consciousness.