It is not my place to diagnose individuals with mental health conditions, and I am unable to state with absolute certainty whether or not Donald Trump is a narcissist because of this. Narcissism is a personality disorder that is characterized by an inflated sense of self-importance, a lack of empathy, and a need for admiration. Narcissists also tend to have an unhealthy preoccupation with themselves and their achievements. It is a complicated and multi-faceted disorder, and its symptoms can present themselves in a wide variety of ways, including attitudes and behaviors.
There are many people who have researched and written about the behavior of Donald Trump and have suggested that he exhibits some of the characteristics of a narcissist. While it is not appropriate for me to diagnose individuals, there are many people who have suggested that he exhibits some of these characteristics. This encompasses his propensity to brag and overstate his achievements, his inability to empathize with the experiences of others, and his incessant demand for admiration and attention.
However, it is essential to keep in mind that in order to diagnose a person with a mental health condition such as narcissism, that person must first undergo an in-depth evaluation at the hands of a trained mental health professional. It is not possible to determine with absolute certainty whether or not an individual is a narcissist in the absence of a thorough evaluation.