Shaun Ryder says his "nutty behaviour" throughout his career as a pop star was the result of undiagnosed attention deficit hyperactivity disorder (ADHD).
The Happy Mondays singer, 58, earned a reputation as a prankster and trouble-maker during his late 80s and early 90s heyday and was at one time banned from appearing live on Channel 4 after a sweary appearance on Chris Evans'show.
He was diagnosed with ADHD last year after two of his daughters, aged 12 and 30, received similar diagnoses.
Ryder, who is releasing his first solo album in 18 years, said the condition ultimately led to him using drugs at the height of fame.
He told the PA news agency: "The problem stems from the ADHD. The nutty behaviour. You have got all this energy going and you can't focus on anything. It's like games at school, like football. I couldn't play because I couldn't understand the rules. I couldn't get offside. I just couldn't take in the rules. You want to be a bit of a superhero at school so you start getting into crime and robbing a bit of money, and the girls love you. Attention-seeking stuff like that because that's the only thing you could do really that I enjoyed — getting into trouble."
Ryder said that he had known all his life that "something wasn't quite right".
Ryder, who no longer uses drugs, has developed a number of methods of dealing with his ADHD but does not take Ritalin, a common treatment, because it is an amphetamine.
The singer-songwriter, known for penning Happy Mondays hits including 'Kinky Afro' and 'Step On', called for better understanding of the condition in schools.
Ryder recorded upcoming solo albumin 2010, shortly before appearing on but the record was shelved as he pursued a TV career.
He rediscovered the songs during lockdown.
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