Pop star Lady Gaga has announced she needed to cancel a planned performance in Brazil, citing "severe pain."
The musician and actress had been scheduled to perform at Brazil's Rock in Rio festival, but had to cancel her set because of health problems, reports Variety.
"Brazil, I'm devastated that I'm not well enough to come to Rock in Rio," wrote the singer on Twitter. "I would do anything for you but I have to take care of my body right now."
"I ask for your grace and understanding, and promise that I will come back and perform for you soon," wrote the mother monster, as she is known to her fans, who are known as little monsters.
She later explained the pain was related to her fibromyalgia, and that she was taken to the hospital.
"I was taken to the hospital, it's not simply hip pain or wear & tear from tour, I'm in severe pain," tweeted Gaga, reassuring her fans, "I'm in good hands with the very best doctors."
"In our documentary the #chronicillness #chronicpain I deal with is #Fibromyalgia," tweeted the singer. "I wish to help raise awareness and connect people who have it."
Gaga opened up about her struggles with fibromyalgia in her new Netflix documentary, "Gaga: Five Foot Two."
Earlier in September, Gaga also cancelled a show in Montreal for medical reasons.
Fibromyalgia is a disorder that researchers believe affects the way the brain processes pain signals, causing sensations of severe pain. There is no cure for the condition, but its symptoms can usually be managed with medications, according to the Mayo Clinic.
"It's hard, but it's liberating too," said a tearful Gaga while opening up about her condition during a press conference for the documentary.
"There is an element and a very strong piece of me that believes pain is a microphone," said the musician. "My pain real does me no good unless I transform it into something that is."
"I hope that people watching it that struggle with chronic pain know they are not alone," she said of the film.
"The most important thing in this whole process was this film didn’t come across like a big commercial for me," Gaga said of the documentary. "I think the most important thing you can be is authentic."
Gaga added that she believes music has the power to help those who are suffering.
"Music is pretty powerful," said the singer. "I would dare to say it is infinitely more powerful than a tweet or an Instagram post."