English singer-songwriter Robbie Williams has opened up about being diagnosed with “a little bit of autism” and shared his struggles with intrusive thoughts.The 52-year-old singer revealed that he had earlier been diagnosed with ADHD, as well as Tourette’s syndrome, the Daily Mail reported.Robbie Williams' Autism DiagnosisSpeaking at the launch of his clothing brand Hopeium at Flannels, Williams said his autism diagnosis has helped explain some of his behaviors.“I have ADHD and I just found out I have a bit of autism as well, which I actually f*****g love because it explains so much,” he said.The British pop icon said he now sees the diagnosis as an explanation for “all the weird” things he does. He also described how ADHD affects his ability to concentrate.“With the ADHD you can completely and utterly concentrate on something 1000 per cent, but with absolutely everything else, you just cannot do it. Ask my kids,” he said.The singer said he is “completely and utterly obsessed with creating images and making funny things”.'My Brain Is Incredibly Creative'Williams, who has won a record 18 BRIT Awards, said creativity helps him redirect his thoughts and avoid focusing on things that make him panic or feel scared.“My brain is incredibly creative, and it can be creative about everything in the world that you panic or are scared about,” he said.He gave the example of sitting on a plane and having an intrusive thought about possessing telekinetic powers and causing the plane to crash.He said he has learned to “train my brain to do something better” rather than focusing on worrying thoughts.What Is Autism?Autism is a neurodevelopmental condition that can affect communication, social interaction and behavior. It is a spectrum, meaning symptoms and their severity can vary widely between individuals.Common characteristics can include repetitive behaviors or interests, difficulty with changes in routine and challenges in social situations.Robbie Williams on Tourette's SyndromeWilliams has also previously spoken about being diagnosed with Tourette’s syndrome. In a recent podcast, he said he had realized that some of the intrusive thoughts he experiences may be connected to Tourette’s, although he does not experience the typical outward tics.“I've just realized that I have Tourette's, but they don't come out. They are intrusive thoughts that happen,” Williams said.He also spoke about struggling to fully take in the reaction of audiences, despite performing in front of large crowds. Williams Diagnosed With ADHD ThriceWilliams has said he was diagnosed with ADHD three times because he “forgot” that he had previously been told he had the condition. He first recalled being diagnosed around 2006 after recognizing ADHD symptoms while reading about the condition online.After his diagnosis, he said he began taking a large number of tablets in the hope that they would “fix” him. He later said his substance misuse escalated, including crushing and snorting the pills.Williams has faced several addictions and has had multiple stays in rehabilitation since rising to fame in the early 1990s.What Is ADHD?ADHD is a neurodevelopmental condition that can involve persistent difficulties with attention, organization and impulse control.Symptoms can include being easily distracted, forgetfulness, losing things and difficulty maintaining concentration. Some people may also experience restlessness and impulsive behavior.