Celebrities who struggle with Obsessive Compulsive Disorder - Many people live with Obsessive Compulsive Disorder (OCD), including celebrities. Camila Cabello is the most recent celebrity to admit to living with the disorder, according to Cosmopolitan UK.

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What is OCD? - Obsessive compulsive disorder (OCD) is an anxiety disorder in which people have unwanted and repetitive thoughts, feelings, ideas, and sensations (obsessions) leading them to a need to carry out a certain behavior (compulsion), according to Health Central.

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Camila Cabello - Recently, the American-Cuban singer-songwriter talked about her experience living with OCD in an interview with Cosmopolitan UK.

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Cameron Diaz - The actress feels the compulsion to wash her hands several times a day and obsessively clean doorknobs, according to ABC News.

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Donald Trump - The American president claims to have borderline obsessive compulsive disorder in which he has a strong fear of germs, according to the Daily Mail.

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Leonardo DiCaprio - According to the site ABC News, the actor was obsessed with sidewalks when he was little. When he played the character Howard Hughes, a man with OCD, in 'The Aviator' (2004), his childhood obsession returned and worsened.

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Julianne Moore - According to ABC News, the American actress had to leave her house every day at the exact same time and felt the compulsion to line everything up in a certain way.

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Howie Mandel - The Canadian comedian talked about his fear of germs in his book 'Here’s the Deal: Don’t Touch Me.'

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Serena Williams - The tennis player ties her shoelaces a specific way and feels the need to bounce the ball five times against her racket before serving, according to the Daily Mail.

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David Beckham - The ex-soccer player's obsession is to pair things and organize them by type or color, according to the Daily Mail.

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Daniel Radcliffe - The actor spoke about his experience with OCD in 2012, stating that he had lived with the disorder since he was five years old. Radcliffe would repeat every sentence under his breath, states the Daily Mail.

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Billy Bob Thornton - The eccentric actor-turned-musician spoke about his OCD in 2004 with Ann Curry on 'Dateline.' He stated that he does math all the time and believes that every number represents a different person. He also doesn't like using certain numbers.

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Justin Timberlake - The singer-actor admitted that he suffers from both ADD and OCD, according to The Daily Telegraph.

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Jessica Alba - The actress is obsessed with being in control and perfect, according to ABC News.

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Katy Perry - The pop singer brushes her teeth four to six times a day, states the Daily Mail.

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Charlize Theron - The South African actress revealed to the Irish Independent that she needs to always organize everything around her.

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Charlie Sheen - According to Ranker, the American actor-comedian always needs everything in order.

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Jennifer Love Hewitt - According to ABC News, the actress admitted that she suffers from OCD.

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Alec Baldwin - Also according to ABC News, the actor is another celebrity who went public with his OCD.

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Rose McGowan - The Italian-born American actress has OCD and also agoraphobia, according to IMDb.

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Harrison Ford - The 'Star Wars' actor is another celebrity living with OCD, states the Daily Mail.

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Roseanne Barr - The American actress-comedian spoke about her experience with OCD on Larry King's show.

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Howard Stern - ABC News reports that in his book 'Miss America,' the radio DJ told his experience with OCD.

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Woody Allen - The director is another living with OCD, according to the BBC.

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Fiona Apple - The American singer-songwriter has obsessive compulsive disorder, reports the site MTV.

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Dan Aykroyd - The Canadian actor-comedian has Tourettes, Asperger's, and OCD, according to the Daily Mail.

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Stanley Kubrick - The Guardian reports that screenwriter Noah Hawley is often compared with Stanley Kubrick, however, according to Hawley, "I am Kubrick without OCD."

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Ludwig van Beethoven - Researchers believe that Beethoven presented with many OCD symptoms, according to Ranker.

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