Answer:
Agoraphobia
Explanation:
Agoraphobia is a psychological situation of fear in which a person feels panic attacks and avoid such places or situations where an individual feel anxiety. In this situation, the person feels trapped in a situation where the individual feel could die. In this situation person fear from the situation or anticipated situation which includes enclosed spaces, crowd, to travel in buses, etc.
Symptoms:
Thus in the above statement, Mr. Santo was suffering from agoraphobia due to fear of panic attack left his home last 10 years.