The claim that narcissists' pupils dilate fully when they are mad is not a universally recognized or scientifically established phenomenon related specifically to narcissism. Pupil dilation, also known as mydriasis, can occur for various reasons, and it is not exclusive to individuals with narcissistic traits. Pupil dilation is a natural physiological response influenced by the autonomic nervous system, which regulates the size of the pupils based on the amount of light and emotional arousal.
When people experience strong emotions like anger, fear, excitement, or arousal, their pupils can dilate as part of the body's "fight or flight" response. This dilation allows more light into the eyes, potentially enhancing visual perception and preparing the body for action.
The extent of pupil dilation can vary depending on the individual, the intensity of the emotion, and other factors. It's crucial to recognize that pupil dilation alone is not a reliable indicator of narcissism or any other specific personality trait. Diagnosing personality disorders, including narcissistic personality disorder, requires a comprehensive assessment by a qualified mental health professional.
In summary, while pupil dilation can occur during moments of emotional arousal, it is not a definitive characteristic of narcissism or any other personality trait. If you have concerns about narcissistic behavior or any other mental health issue, it is best to consult with a licensed mental health professional for a proper evaluation and guidance.