Yes, it is possible to have narcissistic personality traits without meeting the criteria for a full-blown Narcissistic Personality Disorder (NPD). Personality traits exist on a spectrum, and everyone has some degree of various traits. It is when these traits become inflexible, maladaptive, and cause significant impairment in functioning and relationships that they might be considered part of a personality disorder.
Narcissistic Personality Disorder is diagnosed when a person exhibits a pervasive pattern of grandiosity, a constant need for admiration, and a lack of empathy that begins in early adulthood and is present in a variety of contexts.
On the other hand, having some narcissistic traits or behaviors doesn't necessarily mean someone has a personality disorder. Many people may exhibit narcissistic traits or behaviors occasionally or to a mild extent, especially during periods of stress or when seeking to protect their self-esteem. It's essential to consider the intensity, duration, and impact of these traits on the person's life and relationships to determine if they meet the criteria for a personality disorder.
Keep in mind that personality disorders are diagnosed by qualified mental health professionals through a comprehensive assessment, and they take into account a person's overall functioning and behavior across various situations. If you are concerned about your own traits or those of someone else, it's essential to seek a professional evaluation to gain a better understanding of the situation and explore appropriate interventions if necessary.