Sia reveals she suffers from rare neurological disease

Singer-songwriter Sia has revealed she has chronic pain disease Ehlers-Danlos syndrome.

The 43-year-old opened up to her Twitter followers, revealing she's in chronic pain.

"Hey, I'm suffering with chronic pain, a neurological disease, Ehlers Danlos and I just wanted to say to those of you suffering from pain, whether physical or emotional, I love you, keep going. Pain is demoralising, and you're not alone (sic)," she wrote on Twitter.

According to the Ehlers Danlos Society's website, EDS is "a group of genetic disorders generally determined by joint hypermobility (joints that stretch further than normal), skin hyperextensibility (skin that can be stretched further than normal), and tissue fragility."

The disorder is rare, affecting only 1 in 5,000 individuals worldwide.