Larry Mullen Jr.has been diagnosed withdyscalculia, a form ofdyslexiathat impacts his work.

Ive always known that theres something not particularly right with the way that I deal with numbers.

Im numerically challenged, he explained onTimes Radio.

Larry Mullen Jr. performs at a drum set on a dark stage.

Larry Mullen Jr. of U2 performs during ‘The Joshua Tree Tour’ on June 29, 2017 in East Rutherford, New Jersey.Taylor Hill/FilmMagic

And I realised recently that I have dyscalculia, which is a sub-version of dyslexia.

So I cant count [and] I cant add.

I am pained because Im trying to count the bars.

U2’s Larry Mullen Jr. on ‘Left Behind’ documentary

I had to find ways of doing this and counting bars is like climbing Everest.

The doc has been shortlisted for an Academy Award.