Ben has always been an odd child, including having no emotions and separating himself from normal childhood play. he would most likely be diagnosed with personality disorder.

He would most likely be diagnosed with "schizotypal" personality disorder.

Schizotypal personality disorder is described by somebody who has awesome trouble in setting up and keeping up cozy associations with others. A man with schizotypal identity issue may have outrageous distress with such connections, and in this way have to a lesser degree a limit with respect to them. Somebody with this issue as a rule has psychological or perceptual mutilations and also unconventionalities in their regular conduct.

That is true , instead try to have a sit down talk with them