If you have narcissistic personality disorder, are you likely to get delusions of grandeur?

It is possible. Such delusions are certainly possible for a narcissistic individual and would be evidence of a fairly established case. Some are merely striving toward grandeur - thinking it has arrived is advanced!
Narcissism. Narcissistic personality disorder is characterized by unwarranted feelings of self-importance. A sense of entitlement and grandiosity. A strong need for admiration, but lack feelings of empathy. These qualities are usually defenses against a deep feeling of inferiority. Therapy can help. Best wishes.

Related Questions

How do you get a person w narcissistic personality disorder to seek help to improve quality of life when they can't acknowledge they have an issue?

Narcisstic Tx. This is a tough assignment. There really is no treatment for anyone who does not want treatment no matter the disorder. It could be this or any addiction. They have to hit bottom before they are ready to discuss treatment. If this person comes face-to-face with lossing someone or something of value you can discuss treatment. Don't call it narcissism. Better to take a trait of selfishness to work. Read more...
Narcissism . The short answer to this, is the person has to want to help. You cannot force them to seek therapy, counseling, or much of anything else unless they want it. Much harder question to address is why does the person who is not narcissistic stay with the narcissist? Read more...

How many people in the u.S. Are diagnosed with narcissistic personality disorder?

Fairly common. Estimates are 8% in males and 5% in females in the us as lifetime prevalence. Since this tends to be a chronic disorders, especially if untreated, that translates pretty closely into you haveing about a 5-8% chance of running into (or being) someone with npd. Read more...

Do people with narcissistic personality disorder be institutionalized? If yes why?

if they meet criter. Only if they meet criteria. They must be suicidal or homicidal, or , in some states, unable to take care of themselves. They are not immune from other types of psychiatric illness. Read more...