Pop singer Selena Gomez is taking time out to deal with panic attacks and depression thought to be a side effect of her lupus disease.

Gomez, 24, issued the statement in the midst of her Revival world tour, and about a year after revealing that she had been diagnosed with lupus.

Lupus is an autoimmune disease that can damage any part of the body.

It was not immediately clear when she would start her break or what would happen with the rest of her tour, mostly in Europe and South America, through the end of 2016.

Gomez announced her decision about two weeks after getting into a social media feud with her ex-boyfriend, Justin Bieber, after the Canadian pop star posted images to his Instagram page of himself and his latest girlfriend, Sofia Richie. Fans posted negative comments and Bieber made his account private in response.

Gomez, who found fame as a teenager through the 2007-2012 Disney Channel series Wizards of Waverly Place, also cancelled half of her Stars Dance tour in 2014 when she was initially diagnosed with lupus.

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