A psychological disorder refers to a condition that is typically identified by symptoms such as abnormal thoughts, behaviors and feelings. These disorders may be linked to different conditions including psychosis, depression, stress, sleep and anxiety. The prevalence of mental disorders such as somatic problems, depression and anxiety are influenced by gender. Some of the mental health issues faced by men include depression, generalized anxiety disorder, social anxiety disorder, obsessive-compulsive disorder, bipolar disorder and schizophrenia. Men are more prone to withdraw socially under stress and might not take actions to handle their stress. They are also more likely than women to be diagnosed with antisocial personality disorder and substance abuse. Mental stress in males is connected with a number of health issues that might influence their health including high blood pressure and consequent cardiovascular morbidity and mortality, erectile dysfunction, cardiovascular disease, and decreased fertility. This book provides significant information to help develop a good understanding of psychological disorders in males. It presents researches and studies performed by experts across the globe. Those in search of information to further their knowledge will be greatly assisted by this book.