As did I

But this existed before, this is just a new name/rebranding, DSM V consolidating a few things IIRC. Particularly in autism (and most of this is in kids with autism), but also as a thing where kids had a swallowing disorder or issue early on, which even if it was resolved surgically, it would then self-perpetuate as a behavioural issue as the parents were anxious af and reacting to every minor issue, the kid picks up on it, then becomes more likely to gag, which sends the mom into a bit of a panic, scaring the child further... basically they're training/conditioning each other to have incredibly stressful meal times and the kid to avoid eating. Or also just 'severe' picky eating to the point where it reaches clinician significance as you noted, the extreme outliers

these are all things that existed for ages.

As did I

But this existed before, this is just a new name/rebranding, DSM V consolidating a few things IIRC. Particularly in autism (and most of this is in kids with autism), but also as a thing where kids had a swallowing disorder or issue early on, which even if it was resolved surgically, it would then self-perpetuate as a behavioural issue as the parents were anxious af and reacting to every issue, the kid picks up on it, then gags, which sends the mom into a bit of a panic, scaring the child further... basically they're training/conditioning each other to have incredibly stressful meal times and the kid to avoid eating. Or also just 'severe' picky eating to the point where it reaches clinician significance as you noted, the extreme outliers

these are all things that existed for ages.