Anxiety is a general term for several disorders that cause nervousness, fear, apprehension, and worrying. These disorders affect how we feel and behave and can cause physical symptoms. Mild anxiety is vague and unsettling, while severe anxiety can seriously affect day-to-day living. Anxiety is a natural human reaction to stressful situations but becomes a condition when it frequently occurs without a trigger. It is vital to know the difference between normal feelings of anxiety and an anxiety disorder that requires medical attention. When faced with potentially harmful or worrying triggers, feelings of anxiety are not only normal but necessary for survival. Ever since the earliest days of humanity, the approach of predators and incoming dangers have set off alarms in the body and allowed an individual to take evasive action. These alarms become noticeable in the form of a raised heartbeat, sweating, and increased sensitivity to surroundings. This comprehensive book is indispensable for anyone studying anxiety or seeking to deliver effective treatments.