Mood disorder is a psychological disorder characterized by the elevation or lowering of a person's mood, such as depression or bipolar disorder. This book is a valuable compilation of topics, ranging from the basic to the most complex advancements in the field of mood disorders. The text focuses on the treatment of this disease with utmost detail. Some of the commonly used treatments like behavioral therapy, cognitive behavior therapy, mood stabilizers, etc. are discussed through case studies for better understanding. In this book, using case studies and examples, constant effort has been made to make the understanding of the difficult concepts of mood disorders as easy and informative as possible, for the readers.