A phobia can be defined as an irrational and overwhelming fear of things or events. They are very different from normal reactions that a person has when they are afraid. There are different categories of phobias – specific and non-specific. The first is self explanatory; in the latter, phobias are usually triggered by social situations or even performing. This can cause major panic attacks as well. Some well known phobias that fall into this category are agoraphobia (open areas), social phobia (receiving attention) and claustrophobia (confined spaces). Phobias and their reactions are triggered by the subconscious mind.