It's not bipolar, I understand those are the symptoms of ADD. Bored with everything, very high threshold for enjoyment or interest, but getting quickly bored with that same thing.
This is also not ADD. ADD is, among a few other things, a deficiency to guide ones concentration. Hyperfocus and repeated Hyperfocus for things you like is actually a sign of ADD. ADD people can very well do things they enjoy repeatedly and often.
It's also not something to fret over. A lot of those monikers, like ADD are thrown around with a cavalier, throw-caution-to-the-wind attitude. And I mean by doctors.
Some of so-called "diseases" are actually natural responses to messed up situations (like a boring to hell school environment for a smart kid), and mostly stick as medical fads (tons of them in previous decades that are dead and burried now) and because subscribing drugs pays well.
You are aware that ADD is, at the current state of science, considered a difference within the brain chemistry and no "reaction" to something? You don't "develop" ADD. One requirement to diagnose ADD in high age is to prove that it was there from the beginning on, in your very first years.
And that cavalier attitude that you describe is actually very harmful to people that _do_ have ADD, especially those that continue to have it after a certain age.
Also note that "disease" is the wrong word for this. It is a condition: you have it, it won't go away, but you can work on it and build your life around it. It's not that you necessarily _suffer_. People speaking with half-knowledge about it are a popular nuisance, though.
Also, describing those things as fads is _also_ very insulting to those that do struggle with these issues.
It's not a deficiency in guiding concentration. It's the complete lack of WANTING to concentrate on boring things. That's why people with ADD can easily concentrate on a video game for hours. Clearly they can guide their concentration on things they enjoy!
* Delayed stop and transition of concentration from one task to another
I recommend reading some of the linked papers.
Be aware that there are multiple subgroups of ADD with quite a number of possible behaviors each. Quick boredom is only a sign for some of the patients, mostly those with Hyperactivity. You can have ADD without Hyperactivity.
