Trauma-related disorders, particularly from early developmental trauma, severe neglect, or disrupted attachment, can mimic autism through social withdrawal and avoidance of eye contact (defensive protection rather than social processing difficulties), communication delays and difficulties (from lack of language exposure or trauma’s impact on brain development), emotional dysregulation and meltdowns (from emotional dysregulation rather than sensory overload), repetitive self-soothing behaviors (anxiety management rather than stimming), sensory sensitivities (hypervigilance rather than sensory processing differences), and rigid need for routine (anxiety-driven safety-seeking rather than cognitive processing style).
Severe early deprivation can create “quasi-autistic” patterns that can be genuinely difficult to distinguish. The critical distinctions are that trauma-related difficulties typically improve significantly in safe, nurturing environments and with adequate psychological treatment, show more variability across contexts (worse with triggers), are tied to identifiable adverse experiences rather than present from earliest infancy, and lack the restricted interests and genuine social communication processing deficits of autism.
Now I am interested in what is meant be “severe early deprivation.” I think it is likely that this is the greatest cause of declining mental health in our society. And, I think it’s likely that the deprivation is a downstream result of “bad” mothers who became “bad” due to the decline of love in our culture, which are mainly due to white guilt, sucky culture of meanness, etc.