Agoraphobia is a very complex phobia usually manifesting itself as a collection of inter-linked conditions.
Many people with Agoraphobia also fear being left alone (monophobia), dislike being in any situation where they feel trapped (exhibiting claustrophobia type tendencies) and fear travelling away from their ‘safe’ place, usually the home. Some agoraphobia suffers find they can travel more easily if they have a trusted friend or family member accompanying them, however this can quickly lead to dependency on their carer.
The severity of agoraphobia varies enormously between those who are housebound, even room-bound, to those who can travel specific distances within a defined boundary. It is not a fear of open spaces as many people think.