Donald Trump and Boris Johnson seem to epitomise the lack of empathy and wild self-regard that fit with what the narcissistic personality inventory tells us narcissism looks like.
There is a lot of pressure on the individual when we only have ourselves to promote. We need to behave in narcissistic ways to do this.
Even supposedly clear-cut terms like 'psychopathy' and 'sociopathy', now equally common in our day-to-day discourse, are ideologically fuzzy.
As the conversation around mental health has expanded and clinical terms have entered everyday conversation, the downside is how ready we are to 'diagnose' one another.