Narcissistic Personality Disorder (NPD)
Narcissistic Personality Disorder (NPD) is a mental health condition characterized by a pervasive pattern of grandiosity, a need for admiration, and a lack of empathy.
Symptoms:

Grandiose sense of self-importance
Preoccupation with fantasies of success, power, or beauty
Belief that they are special or unique
Need for excessive admiration
Sense of entitlement
Lack of empathy
Interpersonally exploitative behavior
Arrogant and haughty attitudes
Envy of others or belief that others are envious of them

Diagnosis:
NPD is diagnosed based on a clinical interview and review of the patient's history. To meet the diagnostic criteria, a person must exhibit at least five of the following symptoms consistently over a significant period of time:

Grandiosity
Need for admiration
Lack of empathy
Entitlement
Interpersonally exploitative behavior
Envy or arrogance
Belief in own uniqueness or superiority

Treatment:
Treatment for NPD typically involves psychotherapy, such as cognitive behavioral therapy (CBT) or psychodynamic therapy. These therapies aim to help individuals:
Develop realistic self-esteem, Improve empathy and interpersonal skills, Manage their emotions, and Reduce their need for admiration.
Complications:
If left untreated, NPD can lead to significant problems in relationships, work, and social life. Individuals with NPD may:
Have difficulty maintaining healthy relationships, Engage in impulsive or risky behaviors, Struggle with career success, and Experience social isolation and loneliness.
Note: It's important to remember that not everyone who exhibits some narcissistic traits has NPD. A mental health professional can provide an accurate diagnosis and recommend appropriate treatment.