We have a relative like this.
It started with a very serious illness. We were all very concerned about her, rooted for her getting through it and genuinely hoped for the best outcome possible. She underwent months of gruelling treatment and frequently posted on fb about. Nobody minded, we assumed it was her therapy. We all liked and commented frequently.
After months of treatment she eventually came through it. Battle scarred, but to all intents and purposes, very much alive and well. We were all thrilled.
But she had become addicted to the the fb attention. Even though it's been well over 2 yrs since the all clear, the incessant fb posts (averaging about 5 a day) and hundreds of pictures, relating to her every minor twinge, gp appointment, hospital check up, emotions, how her digestive system is behaving today, the anniversaries of finding out about her illness/the first cannula/the first surgery/the first overnight hospital stay/the all-clear etc etc has just become truly tedious and blatant attention-seeking that it's repugnant.
The likes and comments have taken a serious nose-dive as you can see her fb friends getting sick of it.
She's now become so desperate for the attention she's now resorting to just being rude and obnoxious... Such as racist & bigoted posts or overly sweary nasty posts criticising people's physical appearances... posts she knows will antagonise her friends to get any form of response.
The serious illness we were once all concerned about has now created an attention-seeking fb monster.
And it' spread into real life too. Parties and get-togethers where she's invited are completely dominated and taken over by her 'me me me' manner, to the extent many people will no longer attend if she's there.
I can't remember the last time I liked or commented on one of her fb posts as I refuse to fuel the fire.