Phobias are different to simple fears we all experience day to day. Phobias are when someone starts to rearrange their lives around a specific fear, they keep away or avoiding doing things purposefully to avoid their fear.
Phobias are an anxiety disorder. They are defined as extreme out of proportion fear about a specific object or situation. Sometimes even the thought of the object or situation triggers deep anxiety. Phobias interfere with home and work functioning. It should be persistent typically lasting 6 months or longer.