The term commonly used to refer to the hysteria and fanaticism surrounding The Beatles was Beatlemania. It began in the early 1960s and spread rapidly across the world, causing a frenzy among fans of the band. Beatlemania was characterized by screaming crowds at their concerts, fans fainting, and a general obsession with the band's music, style, and personalities. The Beatles were icons of their time, and their influence is still felt today.