If you feel anxious just before giving a presentation or taking an exam, it's probably completely normal. In fact, there are all sorts of situations in life that trigger a healthy anxious reaction. However, if you feel constantly worried about situations that are very unlikely to arise and are anxious to the point that it interferes with your life, you may have an anxiety disorder on your hands.
While it can be difficult to tell the difference between normal anxiety and an actual anxiety disorder, there are certain things to look out for. Check out this gallery to learn more.