Neuroanatomical Correlates of Anxiety Disorders and Their Implications in Manifestations of Cognitive and Behavioral Symptoms

Developing an anxiety disorder can be the source of further cognitive, behavioral, and emotional struggles, impacting the quality of life of people experiencing such disorders and leading to a burden on health systems. Increased knowledge of the neurobiological events leading to the development of such disorders can be crucial for diagnostic procedures, as well as the selection and adaptation of therapeutic and preventive measures. Despite recent advances in this field, research is still at the initial steps when it comes to understanding the specific neurofunctional processes guiding these changes in the brains of people with an anxiety disorder. This narrative review gathered knowledge from previous studies, with the aim of evaluating the neuroanatomical changes observed in individuals experiencing social or generalized anxiety disorder (SAD, GAD), to further link these anxiety-related structural modifications with brain function abnormalities and the expression of symptoms in individuals experiencing anxiety disorders. In addition, contradictory results are discussed, leading to suggestions for future studies.