George Ezra opens up about OCD struggle

Standing for Standing for "purely obsessional", the condition prompts intrusive or unwanted thoughts, without the repetitive physical actions to relieve them.

Ezra said he would compulsively think of the "worst thing" to say in any given situation, then punish himself for being a "horrible" person.

Discovering the condition existed made him feel "less alone," he added.

"I heard about it and instantly there wasn't a doubt in my mind," he told the BBC's How Do You Cope podcast.

"I said, 'That's it. That's what's going on. That's what I'm experiencing.' In hindsight, this is something that I had my whole life."

, Pure O isn't a medically-listed term and it is not generally considered as a separate form of OCD.

"Like any person suffering from OCD, a person with 'Pure O' will have compulsions," it explains on its website.

"Some will manifest as unseen mental rituals, but importantly there will nearly always be physical outward compulsions too, making the term 'Pure O' imprecise."

Examples of internal compulsions include repeating phrases or numbers in your head, or checking how you feel - for example, you might check to see if you are still in love with your partner.

Ezra said: "I think we all know OCD... we hear about extreme cases where people have to flick a light switch X number of times before they can leave the house.

"My understanding is what that is is a physical reaction to intrusive thought patterns, about whatever it might be. 'Pure O' is when you have the thought patterns and the intrusive thoughts without any of the physical actions to relieve them."

The singer said he first heard about the condition while recording his Brit Award-winning second album, Staying At Tamara's.

He described the symptoms as feeling "like you're testing yourself".

"You go, 'In this situation the worst thing you could think is...' And then you have that thought.

"And then you'd think. 'Come on, don't have that thought again,' and you do.

"And then you go 'If you're somebody that can have that thought.... you're [expletive] horrible mate.'"

He added: "Whilst everything's going on in your head, you're vacant to the world around you and you're not really there."

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