Anxiety is a worry about future events and fear is a reaction to current events. These feelings may cause physical symptoms, such as a fast heart rate and shakiness. Anxiety comes in many forms—panic attacks, anxiety attacks, phobia, and social anxiety—and the distinction between a disorder and "normal". There are all sorts of other situations that can be helped by homeopathy, such as fear of flying, going for interviews, public speaking and appearing on the stage. For patients suffering from chronic anxiety, such as panic attacks and agoraphobia, the case must be taken in depth by a qualified practitioner in order to achieve effective relief, but in acute situations, such as examination nerves, the general public can reach for the Aconite bottle with confidence.