Stella suffers not only from panic disorder but also from a phobia.
Anxiety disorders are a group of mental illnesses, and there are different conditions
An anxiety disorder is more than a temporary worry or fear and the symptoms can interfere with the daily routine such as job performance or relationships.
In the case of a phobia, there exists a permanent, intense fear of a specific object or situation. It is usually an irrational fear that changes the whole life of the ill person.