United Kingdom, March 12 -- Luke Combs recently suffered his "worst flare-up" of obsessive-compulsive disorder (OCD) in years.

The 35-year-old singer was recently on tour in Australia and New Zealand but his time Down Under didn't get off to a great start because of his struggles with the condition.

Speaking on '60 Minutes Australia', he said: "Probably the worst flare-up of it I've had in, I would say three or four years, started about two days before this trip.

"The first two weeks for me here were not ideal [because of] a lot of like, rumination, OCD stuff."

The 'Fast Car' hitmaker explained his form of OCD doesn't manifest as repetitive actions or urges, but is "thought-based" and he struggles to surpress the intrusive moments.

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