Anxiety is the feeling of fear accompanied by nervous behavior caused by anticipation of future threat. It is generally characterized by uneasiness, worry, overreaction, somatic anxiety and rumination. Anxiety disorders can be genetic or may arise due to drug abuse. This condition might be considered appropriate if it surfaces occasionally but if it persists for a longer duration it might interfere with the mental and physical well-being of the person. The topics included in this book on anxiety disorders are of utmost significance and bound to provide incredible insights to readers. This book will also provide innovative topics for research which interested readers can take up. It will help the professionals, students and researchers in keeping pace with the rapid changes in this field.