Beyonce’s sister, Solange Knowles, reveals ‘debilitating’ battle with multiple autoimmune disorders admin 2 weeks ago News Comments Off on Beyonce’s sister, Solange Knowles, reveals ‘debilitating’ battle with multiple autoimmune disorders 0 Views The singer said she was diagnosed with POTS, Sjögren’s syndrome and MCAS in 2018. Share Facebook Twitter Stumbleupon LinkedIn Pinterest