Hi Mental,
I was just diagnosed with agaoraphobia too. From what I have found out that agoraphobia is the fear of open spaces or situations where you cannot escape. and more recently is also the fear of experiencing another panic attack. We are so afraid of being hummiliated in public or being stuck somewhere suffering with another panic attack that we avoid any situation where it could happen. Hope this helps answer your question.
losingit
fear of leaving the house would be more agoraphobia than panic disorder
however some have panic attacks in the house
panic attacks are unpleasant but wont hurt you
Agoraphobia? 
