It can be defined as the sensation that you are in danger, that something bad is about to happen. Fear is almost always accompanied by a host of physical symptoms which are quite disturbing. When it is not justified by the presence of real danger or threat, or by any rational cause, and when it is also accompanied by a systematic avoidance of the situations which lead to it, then we have what is called a phobia .
Phobia is actually a kind of panic reaction caused by specific stimuli or situations.
This includes going out of our own's home, travelling without company, or being in the middle of a crowd, standing in queues to leave a place, etc. Social phobia , when the person has a marked and persistent fear of some specific or generalized social situations, such as the shame of misbehaving in front of other people, the fear of participating in group reunions, of starting or maintaining a conversation with strangers, of initiating a romantic encounter, of talking to persons of authority, etc. Specific phobias , when there is a marked and persistent fear in the presence, or even by anticipation of encountering specific objects and situations, such as the fear of flying, injections, coackroaches, dogs, of seeing blood, high places, taking a lift, driving an automobile, or staying in enclosed and restrictive places, such as tunnels or traffic jams. Origins S ix of every ten persons who suffer phobias are able to remember when the fear crisis occurred for the first time, i.e., when the sensation of panic became attached to the place or situation where it first happened. For these persons, there is a very clear connection between the object and the sensation of fear.