What it is not
Pick a patternName the pattern and choose an approach on the left, and the reasoning, the look-alikes and the specific trap for that presentation open here.
Always rule these in or out before you settle on a personality diagnosis. Substance use disorder. Untreated attention-deficit/hyperactivity disorder. Autism, which can look schizoid or schizotypal but is developmentally distinct and needs accommodation rather than correction. Complex post-traumatic stress disorder, which shares affect dysregulation and negative self-concept but adds re-experiencing, avoidance and hypervigilance. And the medical mimics — frontal lobe injury, early frontotemporal dementia, thyroid disease, sleep deprivation.