" Their manipulation is psychological and emotionally devastating – and very dangerous, especially considering the brain circuitry for emotional and physical pain are one and the same (Kross, 2011). What a victim feels when they are punched in the stomach can be similar to the pain a victim feels when they are verbally and emotionally abused, and the effects of narcissistic abuse can be crippling and long-lasting, even resulting in symptoms of PTSD or Complex PTSD. "

― , Becoming the Narcissist's Nightmare: How to Devalue and Discard the Narcissist While Supplying Yourself