The 31-year-old singer did not share what type of autonomic disorder she has, but the term refers to a breakdown of the autonomic nervous system, which controls involuntary bodily functions.
"Wrote, deleted and re wrote this like 5 times... Still not sure what exactly or how much I want to share... However it's so important to me for the people in South Africa... to know why I won't be performing at Afro Punk this New Year's eve," Knowles wrote in a post on Instagram.
The "Cranes in the Sky" singer said she cancelled her performance after her doctors did not clear her for a flight to South Africa.
"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...
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