i found this article in prevention magazine and thought i'd post the link for anyone who's interested. i know there have been people here who question whether they're npd or not, and this may help to set their concerns aside.
https://www.prevention.com/health/mental-health/g19876574/narcissistic-personality-disorder-symptoms/?utm_campaign=Today&utm_source=prevention.com&utm_medium=newsletter&smartcode=YN_0001079711_0001664210&sha1hashlower=695900beba80bf5a5f465f76465740665fa48252&md5hash=f6fc18ce3648fca09c451ded5549bcaf&utm_content=042418&utm_term=hed
it's clear, concise, easy to read and understand (even tho this link is a mile long - lol!), and hits the high points of what red flags to watch for, and even a little bit about how to deal with a npd in your life (work, family, relationships). i hope it's helpful. i was able to reaffirm about the narcs in my life instead of just guessing, which was very settling for me.
I'm going to add another one on here as well. It is 20 diversion tactics narcissists, sociopaths and psychopaths use. I found myself reading it and ticking them all on the list. My main abuser was a sadistic sociopath.
https://thoughtcatalog.com/shahida-arabi/2016/06/20-diversion-tactics-highly-manipulative-narcissists-sociopaths-and-psychopaths-use-to-silence-you/