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The 27-year-old singer revealed the condition affects many parts of his daily life - right down to making sure objects are always lined up perfectly.
Justin is quoted by website Collider.com as saying: "I have OCD mixed with ADD. You try living with that. It's complicated."
OCD - which David Beckham, Jessica Alba and Cameron Diaz have all admitted to suffering from - is a psychiatric anxiety disorder often characterized by obsessive thoughts, compulsions or rituals.
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Pop star Justin Timberlake says he suffers from OCD and ADD, a disorder which makes his life "complicated." |
ADD is a developmental disorder, and suffers often complain of forgetfulness, distractibility and hyperactivity.
Justin has also admitted he is "addicted" to performing live, and gets a thrill out of entertaining arenas packed with his fans.
He explained: "I get butterflies. You just kind of get caught up in the electricity of it. Oh, yeah, that still happens to this day. And when that stops happening, you should stop.
"It's addictive, you know what I mean?"
Earlier this month, it was claimed Justin had been arguing with his girlfriend Jessica Biel - who recently began living in Justin's Los Angeles home - over the contents of their fridge.
A source said: "They are both used to doing things their way and having specific things in the fridge.
"They've had to re-adjust where the beer, water and peanut butter go to make room for each other's favourite foods."