Solange Knowles Reveals She Has Been ‘Quietly Treating’ an Autonomic Disorder

Solange Knowles has canceled her planned New Year’s Eve performance at Afropunk Fest in South Africa due to an illness she revealed to fans on social media Wednesday.

The 31-year-old singer behind A Seat at the Table announced she’s been “quietly treating and working through” an autonomic disorder, which refers to the breakdown of the autonomic nervous system. She did not divulge the specific type of disorder.

“It been a journey that hasn’t been easy on me… Sometimes I feel cool, and other times not so cool at all,” Knowles wrote in a post on Instagram. “It’s a complicated diagnoses, and I’m still learning so much myself, but right now, my doctors are not clearing me for such an extended lengthy flight, and doing a rigorous show right after.”

Knowles previously canceled two other concerts this year, one of which was a headlining appearance at the Florida State University homecoming concert. A statement from the “Cranes in the Sky” singer said it was due to a “medical condition.”

“I can’t put into words how saddened and sorry I am that I am unable to perform for you guys this NYE, there is simply no other place I wanted to be than there with my family to bring in 2018 with you,” she continued, “but I give you my ABSOLUTE WORD I will come back with AfroPunk and deliver this performance…..as it is so extremely important to me to connect with the people who have so closely inspired me in so many ways.”

Knowles also revealed that other music festivals over this past summer and fall have known about her condition and kept the details confidential. “As a part of the self care that I’ve tried to encourage this past year, it needs to start with myself, and I’m looking forward to doing a better job of this 2018,” she wrote.

Organizers for Afropunk released a statement when the decision was made public.

“We would like to thank Solange for her ongoing support, and for sharing this year with us at AFROPUNK festivals around the world,” it read in part. “It is incredibly important to those of us at AFROPUNK that she recovers and remains in good health. Her music and spirit has been a place of great comfort and inspiration to us as a community. And of course we are incredibly saddened that she will no longer be performing at the inaugural AFROPUNK Joburg this weekend.”

The statement also offered an apology to attendees and ticket holders, but reaffirmed this is “completely out of Afropunk’s control.”

“Solange was greatly looking forward to being a part of this historic occasion, and as her statement makes clear, she has vowed to come back to Johannesburg with AFROPUNK at a later date,” the organizers said.

“This past year has been one of the most fulfilling of my life,” Knowles concluded her Instagram post. “Performing this record and experiencing the energy exchange with you guys has been astounding, and I’m so excited about continuing to do the work I feel so absolutely humbled and appreciative to be doing next year. It gives me life.”

This article originally appeared on Entertainment Weekly