Brain damage is defined as the decay or destruction of brain cells. this book is a compilation of research work by international experts sharing their personal experience and abundant knowledge in the field of brain damage. both the fundamental and professional perspectives about neuroscience have been emphasized in this book and a link between them has been established. the content provides theoretical comprehensions of physiopathology techniques which help to improve the diagnostic and clinical approach to fight the catastrophic effects when external and internal noxious affects brains. it covers distinct aspects of brain injury and disorders among children followed by accounts on neurodegenerative processes. adverse effects of drug addiction and sleeplessness on brain and significance of early diagnosis of brain injuries have also been discussed in the book.