Julianne Hough stunned fans as she underwent a bizarre energy treatment in Switzerland on Wednesday, with the results akin to an "exorcism".

A video of the dancer/actress receiving the treatment, known as Network Spinal Analysis, at the World Economic Forum in Davos was shared on Instagram by blogger Jackie Schimmel, who wrote: "Gonna tell my kids this is "The Exorcist"... (Policy Guidline (sic) Disclaimer: I aspire to such flexibility and mind body connection and hope to have similar orgasmic experience at Kinrgy. Love and light.)"

In the clip, Julianne is seen resting on a massage table as Dr. John Amaral demonstrated the treatment, waving his arms over her body and touching her lightly on the neck and bottom.

As he did so, the 31-year-old began uncontrollably screaming, as her body contorted and bucked.

"When energy was stored and bound up in the muscles, it gets to dissipate, and if we're really free to express and allow energy that's been bound in our bodies to move through - this woman is like, an incredible dancer, actress, just, human being, and she has practiced just allowing things to move through," Dr. Amaral explained in the video.

Among those to voice their concern after watching the clip were reality star Stassi Schroeder, who wrote, "What in the actual...," and comedienne Heather McMahan, who commented: "Upon viewing this video for the 45 time it is in fact a demon coming out of her butthole."

But Julianne's brother Derek was quick to defend his sibling, writing: "This stuff looks whacky and crazy but diving into it with the understanding of pure energy is a pretty wild experience. Maybe ahead of its time but worth an open mind."

Jackie later shared another video of Julianne at the World Economic Forum on her Instagram, showing the former Dancing with the Stars judge thrusting her hips and raising her arms energetically in the air as she demonstrated how to "throw negative energy away".