Avicii, who was recently announced as the no. 3 most money-making "Electronic Cash King" of 2014 by Forbes, has been forced to cancel all upcoming appearances.

Avicii attends the KROQ Weenie Roast in Irvine, Calif., in May 2014.

Photo by Gabriel Olsen/Getty Images for CBS Radio Inc.

The immensely popular Swedish DJ, also known as Tim Bergling, has cited health concerns. According to TMZ, Avicii's problems stem from "lingering effects from surgery earlier this year." In March 2014, Avicii had his gallbladder and appendix removed.

Avicii at Marquee in New York City in June 2010.

Photo by Johnny Nunez/WireImage

Avicii will be taking some time off and resting up in Stockholm. Wishing you a speedy recovery, Bergling!