The Black Eyed Peas star revealed he struggles with concentration and impulsiveness, but he is learning how to "control it"'.
He told the Sunday Mirror newspaper: "I have ADHD, I'll admit it. Did you hear about the elephant that got into that fight with a gorilla? Sorry, that's my ADHD kicking in.
"I've got all this stuff in my head at the same time as I'm doing stuff and I don't know how to stop or slow down. But it's all good because I know how to control it.''
The producer - who is also currently a judge on The Voice UK - admitted some of the ''traits'' of the disorder, such as restlessness and constantly thinking - impacts his music in a good way.
He explained: ''For every obstacle there is some type of solution. So if you have ADHD it's your passion point.
"One thing I learned about ADHD is that it's hard to keep your attention and you can't sit still and you're always moving and thinking about a bunch of things.
"But those traits work well for me in studios and in meetings about creative ideas."
It has even influenced his song writing in a big way, with many of his tracks becoming "the most ADHD songs ever".
He added: ''I've figured out a place for it. If you listen to the songs I write, they are the most ADHD songs every.
"They have five hooks in one and it all happens in three minutes. I figured out a way of working with it."