Department of Psychology and Finance, Southern Federal University, CIAPS (Centre for International Advanced and Professional Studies), RussiaFulltext PDF
While the narcissist avoids pain by excluding, devaluing, and discarding others - the autistic patient achieves the same result by withdrawing and by passionately incorporating in his universe only one or two people and one or two subjects of interest. Both narcissists and autistic patients are prone to react with depression to perceived slights and injuries - but Autistic patients are far more at risk of self-harm and suicide.
Vaknin S. Narcissism and Autism. Ann Psychiatr Clin Neurosci. 2021; 4(1): 1038..