What is the psychological problem with the story "Soldier's Home"?

There are two psychological problems in the story, "Soldier's Home." The first is the psychological impact upon Kreb of his experiences fighting in World War I. This impact is generally understood now as Post-Traumatic Stress Disorder (PTSD), although at the time it was more commonly known as "shellshock." This is a disorder much more understood today than it was in 1919.
The second psychological problem is caused by the fact that nobody wants to listen to Krebs. This means that he has no release for the first psychological problem. The only way that people listen to him is if he lies. These lies then make him feel ashamed and give rise to a "distaste for everything that had happened to him in the war." This shame or "distaste" is what constitutes the second psychological problem.
As a result of the lies he tells in order to be listened to, Krebs acquires "the nausea in regard to experience that is the result of untruth or exaggeration." In other words, the reality of what he experienced during the war is distorted and defiled by the lies he tells in its place. In this way, the second psychological problem exacerbates the first. The more he lies, the more ashamed he becomes, and the more ashamed he becomes, the less able he is to talk about or even think about the reality he experienced. He keeps that reality suppressed within him, where it festers in shame.

The experiences and emotions that are described for Harold Krebs in "Soldier’s Home" are apparently those that would be diagnosed today as PTSD, Post-Traumatic Stress Disorder. The post-war re-entry difficulties that Harold is having are multi-dimensional, including sleeping long hours, lack of emotional connection, lack of motivation, and questioning of core values.
Harold’s parents promote both the value of hard work and enjoying life; they want him to get a job and start dating girls. The challenges of making emotional connections sharply contrast with his conviction of speaking honestly; for example, he believes it is better to be truthful and tell his mother he doesn’t love her, but he cannot sustain it when he realizes that she is hurt. Harold cannot connect with daily life that is not war-related, and he feels displaced from his hometown, which he must leave.