Final answer:
Based on the symptoms described, Stephanie is most likely to be diagnosed with panic disorder. Panic disorder is a type of anxiety disorder characterized by recurrent panic attacks.
Step-by-step explanation:
Based on the symptoms described, Stephanie is most likely to be diagnosed with panic disorder. Panic disorder is a type of anxiety disorder characterized by recurrent panic attacks, which involve sudden and intense feelings of fear or discomfort. Panic attacks can be accompanied by physical symptoms such as shortness of breath, racing heart, dizziness, and a sense of impending doom.
Panic disorder often leads individuals to avoid situations or places where they fear they might have a panic attack, which can develop into agoraphobia. Agoraphobia is a specific phobia that involves a fear of being in situations where escape might be difficult or where help may not be available, often leading to avoidance of public transportation, among other situations.