People who suffer from anxiety often have a strong desire to retreat from society, holing up and isolating themselves from the world around them.
While it can seem like such people are stuck up, angry at the world or weird in some way from an outsider perspective, the truth is that it may be as uncomfortable for them to be in social situations
(due to the chemical reactions occurring in their brains due to anxiety) as it would be for a highly social anxiety-free person to be trapped in a lonely, empty room.