Selena Gomez released a statement this week in which she claimed to be dealing with horrible side effects of Lupus, but according to a new report, one source insists the singer “is full of s**t.”

Following Gomez's statement on Tuesday, a source is speaking out, claiming that while Gomez is acting as if anxiety and depression have led her to cancel her tour, there's actually much more to the story.

“It is terrible that she has Lupus,” a chronic inflammatory disease that occurs when the body’s immune system attacks its own organs and tissues, “but she is using this as an excuse for everything lately and the truth is that she is just a mess right now,” a source explained to Radar Online on Friday. “She has been feeling completely alone lately.”

According to the report, the June murder of The Voice alum Christina Grimmie, a close friend of Gomez, allegedly sent the 24-year-old “spiraling” into drug abuse.

A Radar Online insider recently revealed that Gomez was mixing a number of drugs, including “Lunesta, Ambien, Klonopin and Xanax” before her close friends and family members staged an intervention and checked her into rehab.

“Everyone close to her is worried because she seems to be back to old behavior,” said the source.

For more on Gomez and her decision to take some time off, check out the Hollywood Life clip below.