I encountered this vocab item in the よつばと!deck. It, along with every Jisho-based source on the web, provides a definition of:
somehow, how, in what way, why, what kind of
However! There are problems…
First, the example sentences never support that definition, instead, they all support my existing understanding of “what’s wrong?” and “what’s up?” This is an example sentence you’ll see at Jisho.org, jpdb.io, and all the rest:
「おぅーい、どうした丹治」「前の学校で習ってない単元があって困っている」
“Oy, what’s up, Tanji?” “I’m having trouble because there’s a unit I didn’t take at my last school.”
Meanwhile, all the human conversations I have found agree with that as well:
- nuances - What does どうした mean and how does it differ from 何をした? - Japanese Language Stack Exchange
- word choice - どうしたの, どうした, どうしたんですか, どうしましたか? - Japanese Language Stack Exchange
- What is the meaning of “どうした”? - Question about Japanese | HiNative
Incidentally, the よつばと!deck also contains どうしたの, which it defines in the way I expect.
Finally, there’s the way よつば uses it in the book. She’s running around a department store excitedly, yelling “何だ?” and “あれだ!” and “どうした?”
In that context, I’m inclined to interpret it as “what is going on here???” (which is similar to “what’s up?”)
Help!