Hallmark signs are irritability, restlessness, anger or just plain apathy. Those suffering can sometimes present with acute laughing at the situation or words and phrases intended to "poke the bear".
The effects of this syndrome will manifest in childish and immature behavior, bad-mouthing and trolling with any and all means to invoke a reaction.
Unfortunately this syndrome has no cure as it's origin is entrenched in mutual love & hate .
(unfortunately we are the same).