Obsessive Compulsive Disorders (OCDs) have long been written and spoken about. Some of the most common OCDs that affect people are excessive cleaning or shopping, addiction to the Internet, playing video games or undergoing various beauty procedures. Even celebrities are often plagued by this disorder, and not everyone is shy to talk about it. Here are some of the most bizarre OCD cases that have been reported around the world.Hollywood divas are usually known for their outrageous demands but this is one case that is anything but that. Cameron Diaz is known to have such a great fear of germs that she opens doorknobs only using her elbows. The star reportedly also cleans her house daily and washes her hands throughout the day, but admits that she has been somewhat successful in controlling her OCD symptoms and that she doesn���t let it affect her work.Leonardo DiCaprio may be one of the most popular actors across the globe, but the star reportedly suffers from OCD. He has admitted in interviews that he has to force himself not to step on every chewing gum stain while walking along and also stop the urge to walk through a doorway several times.Ex-Miss United Kingdom Kelly Waite (35), admits that she is so scared of catching germs that she vacuums her body every day. Waite was diagnosed with the mental health condition over a decade ago and admits that she finds it difficult to stick to a job for long because she fears being surrounded by people with germs. The former beauty queen also bleaches her toilet six times a day and scrubs her sink three or four times.Justin Timberlake has admitted that he likes his things to be lined up at perfect right angles and that some food items should always be there in his refrigerator.Beckham wants his things arranged exactly as he likes them. He is a stickler for cleanliness and doesn���t like odd numbers, so everything in his house is in even number quantities. He has admitted to even rearranging hotel furniture if it fails to meet his expectations and claims that when he curbs his OCD behaviour, he can���t stop thinking about it.The real estate magnate, TV personality and politician is said to have a strong germ phobia. Donald Trump is scared of catching any sort of infection and so, he is afraid to shake hands. Reports say that his disorder even restricts him from touching the ground floor button of a lift to avoid contact with germs.