Anxiety is a normal emotion that most people experience at least once in their lifetime. It is a feeling of nervousness, fear, worry or not being at ease. Anxiety can lead to physical symptoms such as rapid breathing, heavy sweating, and rapid heartbeat. Most people experience only mild anxiety. However, anxiety can become severe enough that it affects a person's ability to function properly on a daily basis. In this case, it can be classified as an anxiety disorder. Anxiety disorders include panic disorder, posttraumatic stress disorder (PTSD), and obsessive-compulsive disorder (OCD). These forms of anxiety are common and require treatment. You can start your essays on anxiety by looking for inspiration from sample papers. In doing so, you will be able to write the best outline, introduction, and conclusion for an anxiety essay.