Definition of "Beatlemania"

BEATLEMANIA caught up with Princess Margaret and Lord Snowdon last week.

1964 July 12, “The Beatles meet Margaret”, in The Straits Times, page 3

London calling, now don't look to us / Phony Beatlemania has bitten the dust

1979, “London Calling”, The Clash (music)

Berlin's six-decade career began before the advent of radio and ended during the height of Beatlemania.

2012, Christoper Zara, Tortured Artists: From Picasso and Monroe to Warhol and Winehouse, the Twisted Secrets of the World's Most Creative Minds, part 1, chapter 2, 51-52