Mental disorder is a psychological syndrome that causes significant distress of personal functioning. These features can be persistent, remitting, and relapsing. The way a person behaves, feels, perceives, or thinks are some factor that defines mental disorders. Some common types of mental disorders are depression, dementia, bipolar disorder and schizophrenia. Mental disorder is associated with distress and disability. It can increase the risk of death and can also cause a significant loss of autonomy. It is generally caused due to environmental and genetic factors, drugs and personal traits. Treatment of mental disorders includes psychotherapy and psychiatric medication. It may also involve lifestyle changes, social interventions, peer support and self-help. This book unravels the recent studies in the field of mental disorders. Some of the diverse topics covered herein address the varied disorders that fall under this category. The extensive content of this book provides the readers with a thorough understanding of the subject.