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• People with narcissistic personality disorder may not want to think that anything could be wrong, so they usually don't seek treatment. If they do seek treatment, it's more likely to be for symptoms of depression, drug or alcohol misuse, or another mental health problem. What they view as insults to self-esteem may make it difficult to accept and follow through with treatment.

• If you recognize aspects of your personality that are common to narcissistic personality disorder or you're feeling overwhelmed by sadness, consider reaching out to a trusted health care provider or mental health provider. Getting the right treatment can help make your life more rewarding and enjoyable
Causes
It's not known what causes narcissistic personality disorder. The cause is likely complex. Narcissistic personality disorder may be linked to:
• Environment — parent-child relationships with either too much adoration or too much criticism that don't match the child's actual experiences and achievements.
• Genetics — inherited characteristics, such as certain personality traits.
• Neurobiology — the connection between the brain and behavior and thinking

Risk factors

Although the cause of narcissistic personality disorder isn't known, some researchers think that overprotective or neglectful parenting may have an impact on children who are born with a tendency to develop the disorder. Genetics and other factors also may play a role in the development of narcissistic personality disorder.
Complications
Complications of narcissistic personality disorder, and other conditions that can occur along with it include:

• Relationship difficulties
• Problems at work or school
• Depression and anxiety
• Other personality disorders
• An eating disorder called anorexia
• Physical health problems
• Drug or alcohol misuse
• Suicidal thoughts or behavior

Prevention

Because the cause of narcissistic personality disorder is unknown, there's no known way to prevent the condition. But it may help to:
• Get treatment as soon as possible for childhood mental health problems.
• Participate in family therapy to learn healthy ways to communicate or to cope with conflicts or emotional distress.
• Attend parenting classes and seek guidance from a therapist or social worker if needed