7 Celebrities with Obsessive-Compulsive Disorder [Photos]

Justin%20Timberlake%20OCD%20behaviors%20include%20an%20obsession%20with%20lining%20objects%20up%20and%20feeling%20that%20he%20absolutely%20must%20have%20a%20certain%20food%20item%20in%20the%20house%20at%20all%20times.

Leonardo%20DiCaprio%20was%20obsessed%20with%20sidewalks%20as%20a%20child%2C%20often%20going%20back%20over%20his%20walking%20routes%20to%20repeatedly%20step%20on%20cracks%20or%20gum%20stains.%20Doorways%20also%20triggered%20his%20OCD.%20%20DiCaprio%20admits%20he%20allowed%20his%20compulsive%20tendencies%20to%20worsen%20in%20order%20to%20better%20play%20his%20role%20as%20film%20producer%2Fdirector%20and%20fellow%20OCD%20sufferer%20Howard%20Hughes%20in%20the%20movie%20Aviator.

Cameron%20Diaz%20admitted%20in%20a%201997%20article%20that%20she%20suffered%20from%20a%20phobia%20of%20germs%20that%20caused%20her%20to%20clean%20the%20doorknobs%20in%20her%20house%20so%20many%20times%20that%20she%20faded%20their%20paint.

David%20Beckham%27s%20OCD%20expresses%20itself%20by%20an%20obsession%20with%20pairing%20items%20and%20organizing%20them%20by%20color%20or%20type.%20According%20to%20his%20wife%20Victoria%2C%20Beckham%20has%20purchased%20three%20refrigerators%20so%20that%20he%20can%20have%20one%20for%20drinks%2C%20one%20for%20salads%2C%20and%20one%20for%20other%20foods.%20The%20items%20must%20be%20in%20even%20numbers%2C%20as%20well.%20%22If%20there%27s%20three%20cans%20of%20Diet%20Coke%2C%20he%27d%20throw%20one%20away%20instead%20of%20having%20three--because%20it%20has%20to%20be%20an%20even%20number.%22

Donald%20Trump%20admits%20to%20having%20%22borderline%22%20obsessive-compulsive%20disorder%20that%20causes%20him%20to%20fear%20germs.%20He%20reports%20that%20he%20will%20not%20shake%20hands%20with%20people%2C%20especially%20teachers%2C%20whom%20he%20says%20have%20%2217%2C000%20germs%20per%20square%20inch%20on%20their%20desks.%22%20%20His%20phobia%20also%20prevents%20him%20from%20touching%20the%20ground%20floor%20button%20on%20elevators.

Billy%20Bob%20Thornton%20said%20his%20OCD%20began%20in%20his%20childhood%20as%20a%20result%20of%20abuse.%20An%20obsession%20with%20mathematics%20and%20numbers%20is%20the%20primary%20way%20his%20OCD%20expresses%20itself%2C%20with%20numbers%20taking%20on%20meanings%20that%20are%20specific%20to%20certain%20people%20and%20circumstances.