How to Tell if There’s a Narcissist in Your Bed: a Psychology Checklist

Karen Nimmo
On The Couch
Published in
5 min readFeb 27, 2020

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Is she a narcissist? my client asked.

He’d done some online research and wanted a diagnosis for his partner — a woman he adored but who made him feel like he jumping across hot coals in bare feet.

It was a question I couldn’t answer. It’s not professional — nor ethical — for a psychologist to diagnose someone you’ve never met.

But if your client is struggling in a relationship, it‘s important to help them identify any dysfunctional, and potentially harmful, patterns of behaviour. Because the negative fallout of a toxic relationship can have long-term implications.

What is Narcissism in a relationship?

Narcissistic Personality Disorder (NPD) is a mental health condition, characterised by an extreme self-focus coupled with the inability to consider the feelings of others.

Like many psychologists, I’m wary of diagnosing NPD —it’s a big label and, like any personality disorder, it’s not black and white. A degree of narcissism can also be seen in healthy individuals as confidence or good self-esteem.

But it’s always helpful consider narcissistic traits in analysing the health of a relationship — and your place in it.

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Karen Nimmo
On The Couch

Clinical psychologist, author of 4 books. Editor of On the Couch: Practical psychology for health and happiness. karen@onthecouch.co.nz