Selfiend 

Selfiend is a person who constantly posts selfies (self portraits) of him or herself on social media like Facebook and Instagram. The person does it to an extent that may cause resentment in other social media users, such as the person's facebook friends. Not to be confused with selfriend.

She's such a selfiend! I had to stop following her on facebook, my news feed only consisted of her selfies.

Selfiend by Instagrannies January 26, 2014

Selfied 

The past tense of taking a picture of oneself.

The guy walked into the gym, approached the mirror, took out his camera phone, selfied, and walked out without lifting a single weight.

Selfied by JA King October 18, 2013

selfieness

The propensity to take pictures of yourself wherever you go.

I'd take her with me if it weren't for her obsessive selfieness.

selfieness by Cynicool July 12, 2017

selfienoia 

A word describing someone's fear that if they don't publish a selfie every hour, the world might forget what they look like...may also describe the reaction of friends and the public at large to this person.

Miranda was at first amused by Lee's selfienoia, but eventually threatened to throw him down a flight of stairs if he didn't stop.

selfienoia by The BS Express December 16, 2022