Some individuals with SPD who are in treatment say that "life passes them by" or they feel like living in a shell; they see themselves as "missing the bus" and complain of observing life from a distance.
The literal meaning of the term "schizoid" is "split type".
Many fundamentally schizoid individuals display an engaging, interactive personality that contradicts the observable characteristic emphasized by the DSM-5 and ICD-10 definitions of the schizoid personality.
If that is true, then many of the more problematic reactions these individuals show in social situations may be partly accounted for by the judgments commonly imposed on people with this style.
But there is some evidence of links and shared genetic risk between SPD, other cluster A personality disorders and schizophrenia.
Thus, SPD is considered to be a "schizophrenia-like personality disorder".
These include a significantly compromised quality of life, smaller GAF scores even after 15 years and one of the lowest levels of "life success" of all personality disorders (measured as "status, wealth and successful relationships").
Schizoid personality disorder is a poorly studied disorder, and there is little clinical data on SPD because it is rarely encountered in clinical settings.
It is not people as such that they want to avoid, but emotions both negative and positive, emotional intimacy, and self-disclosure.