Schizoid personality disorder usually begins by early adulthood, though some features may be noticeable during childhood. These features may. Lacks close friends or confidants other than first-degree relatives. Appears indifferent to the praise or criticism of others. Shows emotional coldness. Schizoid personality disorder is one of a group of conditions called They have no close friends, except first-degree relatives. The disorder is often first noticeable during childhood and is usually apparent by early adulthood. The symptoms of the disorder can have an. Affiliations. 1 Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology. Premorbid schizoid traits were significantly commoner in patients with schizophrenia compared to patients with other psychoses, but only in those patients. Distinctive Determinants of Schizoid Loneliness. Intrapsychic Mechanisms. In the first few months of life, anxiety is experienced as fear of persecution. schizophrenia, premorbid personality, schizoid personality, paranoia, positive symptoms, negative symptoms. Issue Section: First Person. Also, symptoms must have begun by early adulthood. Differential diagnosis. Clinicians should distinguish schizoid personality disorder from the following. A clinical diagnosis of autism spectrum disorder (ASD) specifies early childhood presentation of social and communication dysfunction, in.