Looks like this is one of the posts which disappeared, when things got messed up on July 01.
The Psychology Today website has this informative post titled “10 Signs Your Co-Worker / Colleague is a Narcissist. Narcissism in the workplace“.
Quoting from that article “At the workplace, a pathologically Narcissistic co-worker can be annoying and frustrating at best, and a serious threat to your career at worst.“.
The article goes on to detail 10 Traits or Red Flags to watch for.
Click on this Link to visit the Psychology Today website to view their article.