For some it may visit as early as childhood. Left to the ferocity of his own emotions, he begins to feel inferior. He is not good enough to be accepted. As he grows into a teenager, he faces angst and hypersensitivity. He is no longer a child, but not yet accepted as an adult.
Every emotion is intensified.
Every rejection is another brick in the wall he will hide behind. Though he might be fortunate enough to defeat the beast, there is a trail of past hurts left behind in his soul, a residue that lingers in the air. It can be a wound that never completely heals. After the years in college, which are not always as wild and happy as many remember, he acquires a roommate. There also, loneliness arrives unaware, demanding rent rather than paying it.