Personality Disorders INTRODUCTION Personality Disorders and NeuropsychologyPersonality disorders are a complex and challenging set of mental health conditions characterized by deeply ingrained patterns of thoughts, emotions, and behaviors that deviate significantly from societal norms. These disorders can have a profound impact on an individual's relationships, functioning, and overall well-being. Understanding the underlying neurobiological mechanisms and neuropsychological factors associated with personality disorders is crucial for effective diagnosis, treatment, and support.Neuropsychology , as a branch of psychology that focuses on the relationship between the brain and behavior , plays a vital role in unraveling the complexities of personality disorders. It seeks to investigate how brain structure and function interact with cognitive processes, emotional regulation, and social behavior . By studying the neural correlates of personality disorders, neuropsychologists aim to shed light on the underlying mechanisms that contribute to the development, maintenance, and expression of these disorders.Personality disorders encompass a wide range of conditions, including borderline personality disorder, antisocial personality disorder, narcissistic personality disorder, and obsessive-compulsive personality disorder, among others. While the specific causes of personality disorders remain multifaceted and not yet fully understood, researchers have made significant progress in identifying potential neurobiological and neuropsychological factors that may contribute to their manifestation. Neuroimaging techniques, such as functional magnetic resonance imaging (fMRI), electroencephalography (EEG), and positron emission tomography (PET), have provided valuable insights into the structural and functional abnormalities associated with personality disorders. These studies have revealed alterations in brain regions involved in emotion regulation, impulse control, decision-making, and social cognition, offering a glimpse into the neural basis of the atypical personality traits and maladaptive behaviors seen in these disorders. Additionally, research in neuropsychology has explored various cognitive processes and deficits that are commonly observed in individuals with personality disorders.