The unresolved trauma part seems plausible but at least from personal anecdote the corresponding fear may not be of social ostracism in particular but any of a

The unresolved trauma part seems plausible but at least from personal anecdote the corresponding fear may not be of social ostracism in particular but any of a larger family of undesired social consequences (self-image could be considered "social" insofar as it concerns one's relationship with oneself)